\n"
" void f(T* dst, const T* src, int N) {\n"
" std::memcpy(dst, src, N * sizeof(T));\n"
"}\n"
"void g() {\n"
" typedef std::vector* P;\n"
" P Src[2]{};\n"
" P Dst[2];\n"
" f(Dst, Src, 2);\n"
"}\n", s);
ASSERT_EQUALS("", errout.str());
checkNoMemset("void f() {\n"
" std::array a;\n"
" std::memset(&a, 0, 4);\n"
"}\n", s);
ASSERT_EQUALS("", errout.str());
}
void memsetOnInvalid() { // Ticket #5425
checkNoMemset("union ASFStreamHeader {\n"
" struct AVMPACKED {\n"
" union {\n"
" struct AVMPACKED {\n"
" int width;\n"
" } vid;\n"
" };\n"
" } hdr;\n"
"};"
"void parseHeader() {\n"
" ASFStreamHeader strhdr;\n"
" memset(&strhdr, 0, sizeof(strhdr));\n"
"}");
}
void memsetOnStruct() {
checkNoMemset("struct A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" struct A a;\n"
" memset(&a, 0, sizeof(struct A));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A\n"
"{\n"
"};\n"
"void f()\n"
"{\n"
" struct A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("void f()\n"
"{\n"
" struct sockaddr_in6 fail;\n"
" memset(&fail, 0, sizeof(struct sockaddr_in6));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A\n"
"{\n"
" void g( struct sockaddr_in6& a);\n"
"private:\n"
" std::string b;\n"
"};\n"
"void f()\n"
"{\n"
" struct A fail;\n"
" memset(&fail, 0, sizeof(struct A));\n"
"}");
ASSERT_EQUALS("[test.cpp:10]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
checkNoMemset("struct Fred\n"
"{\n"
" std::string s;\n"
"};\n"
"void f()\n"
"{\n"
" Fred fred;\n"
" memset(&fred, 0, sizeof(fred));\n"
"}");
ASSERT_EQUALS("[test.cpp:8]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
checkNoMemset("struct Stringy {\n"
" std::string inner;\n"
"};\n"
"struct Foo {\n"
" Stringy s;\n"
"};\n"
"int main() {\n"
" Foo foo;\n"
" memset(&foo, 0, sizeof(Foo));\n"
"}");
ASSERT_EQUALS("[test.cpp:9]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
}
void memsetVector() {
checkNoMemset("class A\n"
"{ std::vector ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on class that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(struct A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(a));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("class A\n"
"{ std::vector< std::vector > ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on class that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector< std::vector > ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector< std::vector > ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(a));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A\n"
"{ std::vector ints; };\n"
"\n"
"void f()\n"
"{\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:7]: (error) Using 'memset' on struct that contains a 'std::vector'.\n", errout.str());
checkNoMemset("struct A {\n"
" std::vector buf;\n"
" operator int*() {return &buf[0];}\n"
"};\n"
"void f() {\n"
" A a;\n"
" memset(a, 0, 100);\n"
"}");
ASSERT_EQUALS("", errout.str()); // #4460
checkNoMemset("struct C {\n"
" std::string s;\n"
"};\n"
"int foo() {\n"
" C* c1[10][10];\n"
" C* c2[10];\n"
" C c3[10][10];\n"
" C** c4 = new C*[10];\n"
" memset(**c1, 0, 10);\n"
" memset(*c1, 0, 10);\n"
" memset(*c2, 0, 10);\n"
" memset(*c3, 0, 10);\n"
" memset(*c4, 0, 10);\n"
" memset(c2, 0, 10);\n"
" memset(c3, 0, 10);\n"
"}");
ASSERT_EQUALS("[test.cpp:9]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
"[test.cpp:11]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
"[test.cpp:12]: (error) Using 'memset' on struct that contains a 'std::string'.\n"
"[test.cpp:13]: (error) Using 'memset' on struct that contains a 'std::string'.\n", errout.str());
// Ticket #6953
checkNoMemset("typedef float realnum;\n"
"struct multilevel_data {\n"
" realnum *GammaInv;\n"
" realnum data[1];\n"
"};\n"
"void *new_internal_data() const {\n"
" multilevel_data *d = (multilevel_data *) malloc(sizeof(multilevel_data));\n"
" memset(d, 0, sizeof(multilevel_data));\n"
" return (void*) d;\n"
"}");
ASSERT_EQUALS("[test.cpp:8]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
}
void memsetOnStdPodType() { // Ticket #5901
const char xmldata[] = "\n"
"\n"
" \n"
" \n"
"";
const Settings settings = settingsBuilder().libraryxml(xmldata, sizeof(xmldata)).build();
checkNoMemset("class A {\n"
" std::array ints;\n"
"};\n"
"void f() {\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("", errout.str()); // std::array is POD (#5481)
checkNoMemset("struct st {\n"
" std::uint8_t a;\n"
" std::atomic_bool b;\n"
"};\n"
"\n"
"void f() {\n"
" st s;\n"
" std::memset(&s, 0, sizeof(st));\n"
"}", settings);
ASSERT_EQUALS("", errout.str());
}
void memsetOnFloat() {
checkNoMemset("struct A {\n"
" float f;\n"
"};\n"
"void f() {\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:6]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
checkNoMemset("struct A {\n"
" float f[4];\n"
"};\n"
"void f() {\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("[test.cpp:6]: (portability) Using memset() on struct which contains a floating point number.\n", errout.str());
checkNoMemset("struct A {\n"
" float f[4];\n"
"};\n"
"void f(const A& b) {\n"
" A a;\n"
" memcpy(&a, &b, sizeof(A));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct A {\n"
" float* f;\n"
"};\n"
"void f() {\n"
" A a;\n"
" memset(&a, 0, sizeof(A));\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void memsetOnUnknown() {
checkNoMemset("void clang_tokenize(CXToken **Tokens) {\n"
" *Tokens = (CXToken *)malloc(sizeof(CXToken) * CXTokens.size());\n"
" memmove(*Tokens, CXTokens.data(), sizeof(CXToken) * CXTokens.size());\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void mallocOnClass() {
checkNoMemset("class C { C() {} };\n"
"void foo(C*& p) {\n"
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with malloc(), but class provides constructors.\n", errout.str());
checkNoMemset("class C { C(int z, Foo bar) { bar(); } };\n"
"void foo(C*& p) {\n"
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with malloc(), but class provides constructors.\n", errout.str());
checkNoMemset("struct C { C() {} };\n"
"void foo(C*& p) {\n"
" p = realloc(p, sizeof(C));\n"
"}");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (warning) Memory for class instance allocated with realloc(), but class provides constructors.\n", errout.str());
checkNoMemset("struct C { virtual void bar(); };\n"
"void foo(C*& p) {\n"
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (error) Memory for class instance allocated with malloc(), but class contains a virtual function.\n", errout.str());
checkNoMemset("struct C { std::string s; };\n"
"void foo(C*& p) {\n"
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:1]: (error) Memory for class instance allocated with malloc(), but class contains a 'std::string'.\n", errout.str());
checkNoMemset("class C { };\n" // C-Style class/struct
"void foo(C*& p) {\n"
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("struct C { C() {} };\n"
"void foo(C*& p) {\n"
" p = new C();\n"
"}");
ASSERT_EQUALS("", errout.str());
checkNoMemset("class C { C() {} };\n"
"void foo(D*& p) {\n" // Unknown type
" p = malloc(sizeof(C));\n"
"}");
ASSERT_EQUALS("", errout.str());
}
#define checkThisSubtraction(code) checkThisSubtraction_(code, __FILE__, __LINE__)
void checkThisSubtraction_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
Preprocessor preprocessor(settings1);
// Tokenize..
Tokenizer tokenizer(&settings1, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings1, this);
checkClass.thisSubtraction();
}
void this_subtraction() {
checkThisSubtraction("; this-x ;");
ASSERT_EQUALS("[test.cpp:1]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
checkThisSubtraction("; *this = *this-x ;");
ASSERT_EQUALS("", errout.str());
checkThisSubtraction("; *this = *this-x ;\n"
"this-x ;");
ASSERT_EQUALS("[test.cpp:2]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
checkThisSubtraction("; *this = *this-x ;\n"
"this-x ;\n"
"this-x ;");
ASSERT_EQUALS("[test.cpp:2]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n"
"[test.cpp:3]: (warning) Suspicious pointer subtraction. Did you intend to write '->'?\n", errout.str());
}
#define checkConst(...) checkConst_(__FILE__, __LINE__, __VA_ARGS__)
void checkConst_(const char* file, int line, const char code[], const Settings *s = nullptr, bool inconclusive = true) {
// Clear the error log
errout.str("");
const Settings settings = settingsBuilder(s ? *s : settings0).certainty(Certainty::inconclusive, inconclusive).build();
Preprocessor preprocessor(settings);
// Tokenize..
Tokenizer tokenizer(&settings, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
CheckClass checkClass(&tokenizer, &settings, this);
(checkClass.checkConst)();
}
void const1() {
checkConst("class Fred {\n"
" int a;\n"
" int getA() { return a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" const std::string foo() { return \"\"; }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class Fred {\n"
" std::string s;\n"
" const std::string & foo() { return \"\"; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" int a;\n"
"public:\n"
" Fred() { }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" int a;\n"
" int setA() { a |= true; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// functions with a call to a member function can only be const, if that member function is const, too.. (#1305)
checkConst("class foo {\n"
"public:\n"
" int x;\n"
" void a() { x = 1; }\n"
" void b() { a(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
"public:\n"
" int x;\n"
" int a() const { return x; }\n"
" void b() { a(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'Fred::b' can be const.\n", errout.str());
checkConst("class Fred {\n"
"public:\n"
" int x;\n"
" void b() { a(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::b' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned get()\n"
" { return 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" const std::string foo() const throw() { return \"\"; }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const2() {
// ticket 1344
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo() { s = \"\"; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to function argument reference can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a) { a = s; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a) { s = a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to function argument references can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { a = s; b = s; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { s = a; s = b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { s = a; b = a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b) { a = s; s = b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const3() {
// assignment to function argument pointer can be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a) { *a = s; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a) { s = *a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointers can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { *a = s; *b = s; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { s = *a; s = *b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { s = *a; *b = s; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b) { *a = s; s = b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const4() {
checkConst("class Fred {\n"
" int a;\n"
" int getA();\n"
"};\n"
"int Fred::getA() { return a; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" std::string s;\n"
" const std::string & foo();\n"
"};\n"
"const std::string & Fred::foo() { return \"\"; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
// functions with a function call to a non-const member can't be const.. (#1305)
checkConst("class Fred\n"
"{\n"
"public:\n"
" int x;\n"
" void a() { x = 1; }\n"
" void b();\n"
"};\n"
"void Fred::b() { a(); }");
ASSERT_EQUALS("", errout.str());
// static functions can't be const..
checkConst("class Fred\n"
"{\n"
"public:\n"
" static unsigned get();\n"
"};\n"
"static unsigned Fred::get() { return 0; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo();\n"
"};\n"
"void Fred::foo() { s = \"\"; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument reference can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a);\n"
"};\n"
"void Fred::foo(std::string & a) { a = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a);\n"
"};\n"
"void Fred::foo(std::string & a) { s = a; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument references can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { a = s; b = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { s = a; s = b; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { s = a; b = a; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string & a, std::string & b);\n"
"};\n"
"void Fred::foo(std::string & a, std::string & b) { a = s; s = b; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointer can be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a);\n"
"};\n"
"void Fred::foo(int * a) { *a = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" int s;\n"
" void foo(int * a);\n"
"};\n"
"void Fred::foo(int * a) { s = *a; }");
ASSERT_EQUALS("", errout.str());
// assignment to function argument pointers can be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { *a = s; *b = s; }");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { s = *a; s = *b; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { s = *a; *b = s; }");
ASSERT_EQUALS("", errout.str());
// assignment to variable, can't be const
checkConst("class Fred {\n"
" std::string s;\n"
" void foo(std::string * a, std::string * b);\n"
"};\n"
"void Fred::foo(std::string * a, std::string * b) { *a = s; s = b; }");
ASSERT_EQUALS("", errout.str());
// check functions with same name
checkConst("class Fred {\n"
" std::string s;\n"
" void foo();\n"
" void foo(std::string & a);\n"
" void foo(const std::string & a);\n"
"};\n"
"void Fred::foo() { }"
"void Fred::foo(std::string & a) { a = s; }"
"void Fred::foo(const std::string & a) { s = a; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:7] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::foo' can be const.\n", errout.str());
// check functions with different or missing parameter names
checkConst("class Fred {\n"
" std::string s;\n"
" void foo1(int, int);\n"
" void foo2(int a, int b);\n"
" void foo3(int, int b);\n"
" void foo4(int a, int);\n"
" void foo5(int a, int b);\n"
"};\n"
"void Fred::foo1(int a, int b) { }\n"
"void Fred::foo2(int c, int d) { }\n"
"void Fred::foo3(int a, int b) { }\n"
"void Fred::foo4(int a, int b) { }\n"
"void Fred::foo5(int, int) { }");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::foo1' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:10] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::foo2' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:11] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::foo3' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:12] -> [test.cpp:6]: (performance, inconclusive) Technically the member function 'Fred::foo4' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:13] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::foo5' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
// check nested classes
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA() { return a; }\n"
" };\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" int A::getA() { return a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
"};\n"
"int Fred::A::getA() { return a; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::A::getA' can be const.\n", errout.str());
// check deeply nested classes
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB() { return b; }\n"
" class A {\n"
" int a;\n"
" int getA() { return a; }\n"
" };\n"
" };\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
"[test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n"
, errout.str());
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB();\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" int A::getA() { return a; }\n"
" };\n"
" int B::getB() { return b; }\n"
"};");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
"[test.cpp:9] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB();\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" };\n"
" int B::A::getA() { return a; }\n"
" int B::getB() { return b; }\n"
"};");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
"[test.cpp:10] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
checkConst("class Fred {\n"
" class B {\n"
" int b;\n"
" int getB();\n"
" class A {\n"
" int a;\n"
" int getA();\n"
" };\n"
" };\n"
"};\n"
"int Fred::B::A::getA() { return a; }\n"
"int Fred::B::getB() { return b; }");
ASSERT_EQUALS("[test.cpp:12] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::B::getB' can be const.\n"
"[test.cpp:11] -> [test.cpp:7]: (style, inconclusive) Technically the member function 'Fred::B::A::getA' can be const.\n", errout.str());
}
// operator< can often be const
void constoperator1() {
checkConst("struct Fred {\n"
" int a;\n"
" bool operator<(const Fred &f) { return a < f.a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::operator<' can be const.\n", errout.str());
}
// operator<<
void constoperator2() {
checkConst("struct Foo {\n"
" void operator<<(int);\n"
"};\n"
"struct Fred {\n"
" Foo foo;\n"
" void x()\n"
" {\n"
" foo << 123;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct Foo {\n"
" void operator<<(int);\n"
"};\n"
"struct Fred {\n"
" Foo foo;\n"
" void x()\n"
" {\n"
" std::cout << foo << 123;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'Fred::x' can be const.\n", errout.str());
}
void constoperator3() {
checkConst("struct Fred {\n"
" int array[10];\n"
" int const & operator [] (unsigned int index) const { return array[index]; }\n"
" int & operator [] (unsigned int index) { return array[index]; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct Fred {\n"
" int array[10];\n"
" int const & operator [] (unsigned int index) { return array[index]; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::operator[]' can be const.\n", errout.str());
}
void constoperator4() {
// #7953
checkConst("class A {\n"
" int c;\n"
"public:\n"
" operator int*() { return &c; };\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
" int c;\n"
"public:\n"
" operator const int*() { return &c; };\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorconstint*' can be const.\n", errout.str());
// #2375
checkConst("struct Fred {\n"
" int array[10];\n"
" typedef int* (Fred::*UnspecifiedBoolType);\n"
" operator UnspecifiedBoolType() { };\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::operatorint**' can be const.\n", "", errout.str());
checkConst("struct Fred {\n"
" int array[10];\n"
" typedef int* (Fred::*UnspecifiedBoolType);\n"
" operator UnspecifiedBoolType() { array[0] = 0; };\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void constoperator5() { // ticket #3252
checkConst("class A {\n"
" int c;\n"
"public:\n"
" operator int& () {return c}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
" int c;\n"
"public:\n"
" operator const int& () {return c}\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorconstint&' can be const.\n", errout.str());
checkConst("class A {\n"
" int c;\n"
"public:\n"
" operator int () {return c}\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::operatorint' can be const.\n", errout.str());
}
void constoperator6() { // ticket #8669
checkConst("class A {\n"
" int c;\n"
" void f() { os >> *this; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const5() {
// ticket #1482
checkConst("class A {\n"
" int a;\n"
" bool foo(int i)\n"
" {\n"
" bool same;\n"
" same = (i == a);\n"
" return same;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
}
void const6() {
// ticket #1491
checkConst("class foo {\n"
"public:\n"
"};\n"
"void bar() {}");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred\n"
"{\n"
"public:\n"
" void foo() { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct fast_string\n"
"{\n"
" union\n"
" {\n"
" char buff[100];\n"
" };\n"
" void set_type(char t);\n"
"};\n"
"inline void fast_string::set_type(char t)\n"
"{\n"
" buff[10] = t;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const7() {
checkConst("class foo {\n"
" int a;\n"
"public:\n"
" void set(int i) { a = i; }\n"
" void set(const foo & f) { *this = f; }\n"
"};\n"
"void bar() {}");
ASSERT_EQUALS("", errout.str());
}
void const8() {
// ticket #1517
checkConst("class A {\n"
"public:\n"
" A():m_strValue(\"\"){}\n"
" std::string strGetString() { return m_strValue; }\n"
"private:\n"
" std::string m_strValue;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString' can be const.\n", errout.str());
}
void const9() {
// ticket #1515
checkConst("class wxThreadInternal {\n"
"public:\n"
" void SetExitCode(wxThread::ExitCode exitcode) { m_exitcode = exitcode; }\n"
"private:\n"
" wxThread::ExitCode m_exitcode;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const10() {
// ticket #1522
checkConst("class A {\n"
"public:\n"
" int foo() { return x = 0; }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int foo() { return x ? x : x = 0; }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int foo() { return x ? x = 0 : x; }\n"
"private:\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const11() {
// ticket #1529
checkConst("class A {\n"
"public:\n"
" void set(struct tm time) { m_time = time; }\n"
"private:\n"
" struct tm m_time;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const12() {
// ticket #1525
checkConst("class A {\n"
"public:\n"
" int foo() { x = 0; }\n"
"private:\n"
" mutable int x;\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
}
void const13() {
// ticket #1519
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::vector GetVec() {return m_vec;}\n"
" std::pair GetPair() {return m_pair;}\n"
"private:\n"
" std::vector m_vec;\n"
" std::pair m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n"
"[test.cpp:5]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::vector & GetVec() {return m_vec;}\n"
" const std::pair & GetPair() {return m_pair;}\n"
"private:\n"
" std::vector m_vec;\n"
" std::pair m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n"
"[test.cpp:5]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
}
void const14() {
// extends ticket 1519
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair,double> GetPair() {return m_pair;}\n"
"private:\n"
" std::pair,double> m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair,double>& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair,double> m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair,double>& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair,double> m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair GetPair() {return m_pair;}\n"
"private:\n"
" pair m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair & GetPair() {return m_pair;}\n"
"private:\n"
" pair m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair & GetPair() {return m_pair;}\n"
"private:\n"
" pair m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int,std::vector > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< int,std::vector >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int,std::vector >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector, int > GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector, int > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const pair< vector, int >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector, int > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" pair< vector, int >& GetPair() {return m_pair;}\n"
"private:\n"
" pair< vector, int > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::vector,std::vector > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< std::vector,std::vector >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::vector,std::vector >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::vector,std::vector > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::pair < int, char > , int > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< std::pair < int, char > , int > & GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< std::pair < int, char > , int > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int , std::pair < int, char > > GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" const std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetPair' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" A(){}\n"
" std::pair< int , std::pair < int, char > >& GetPair() {return m_pair;}\n"
"private:\n"
" std::pair< int , std::pair < int, char > > m_pair;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" vector GetVec() {return m_Vec;}\n"
"private:\n"
" vector m_Vec;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" const vector& GetVec() {return m_Vec;}\n"
"private:\n"
" vector m_Vec;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::GetVec' can be const.\n", errout.str());
checkConst("using namespace std;"
"class A {\n"
"public:\n"
" A(){}\n"
" vector& GetVec() {return m_Vec;}\n"
"private:\n"
" vector m_Vec;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" int * * foo() { return &x; }\n"
"private:\n"
" const int * x;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" const int ** foo() { return &x; }\n"
"private:\n"
" const int * x;\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::foo' can be const.\n", errout.str());
}
void const15() {
checkConst("class Fred {\n"
" unsigned long long int a;\n"
" unsigned long long int getA() { return a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::getA' can be const.\n", errout.str());
// constructors can't be const..
checkConst("class Fred {\n"
" unsigned long long int a;\n"
"public:\n"
" Fred() { }\n"
"};");
ASSERT_EQUALS("", errout.str());
// assignment through |=..
checkConst("class Fred {\n"
" unsigned long long int a;\n"
" unsigned long long int setA() { a |= true; }\n"
"};");
ASSERT_EQUALS("", errout.str());
// static functions can't be const..
checkConst("class foo\n"
"{\n"
"public:\n"
" static unsigned long long int get()\n"
" { return 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const16() {
// ticket #1551
checkConst("class Fred {\n"
" int a;\n"
" void set(int i) { Fred::a = i; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const17() {
// ticket #1552
checkConst("class Fred {\n"
"public:\n"
" void set(int i, int j) { a[i].k = i; }\n"
"private:\n"
" struct { int k; } a[4];\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const18() {
checkConst("class Fred {\n"
"static int x;\n"
"public:\n"
" void set(int i) { x = i; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Fred::set' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const19() {
// ticket #1612
checkConst("using namespace std;\n"
"class Fred {\n"
"private:\n"
" std::string s;\n"
"public:\n"
" void set(std::string ss) { s = ss; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const20() {
// ticket #1602
checkConst("class Fred {\n"
" int x : 3;\n"
"public:\n"
" void set(int i) { x = i; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" list x;\n"
"public:\n"
" list get() { return x; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" list x;\n"
"public:\n"
" list get() { return x; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
checkConst("class Fred {\n"
" std::list x;\n"
"public:\n"
" std::list get() { return x; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" std::list x;\n"
"public:\n"
" std::list get() { return x; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
}
void const21() {
// ticket #1683
checkConst("class A\n"
"{\n"
"private:\n"
" const char * l1[10];\n"
"public:\n"
" A()\n"
" {\n"
" for (int i = 0 ; i < 10; l1[i] = NULL, i++);\n"
" }\n"
" void f1() { l1[0] = \"Hello\"; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const22() {
checkConst("class A\n"
"{\n"
"private:\n"
" B::C * v1;\n"
"public:\n"
" void f1() { v1 = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A\n"
"{\n"
"private:\n"
" B::C * v1[0];\n"
"public:\n"
" void f1() { v1[0] = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const23() {
checkConst("class Class {\n"
"public:\n"
" typedef Template Type;\n"
" typedef Template2 Type2;\n"
" void set_member(Type2 m) { _m = m; }\n"
"private:\n"
" Type2 _m;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const24() {
checkConst("class Class {\n"
"public:\n"
"void Settings::SetSetting(QString strSetting, QString strNewVal)\n"
"{\n"
" (*m_pSettings)[strSetting] = strNewVal;\n"
"}\n"
"private:\n"
" std::map *m_pSettings;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const25() { // ticket #1724
checkConst("class A{\n"
"public:\n"
"A(){m_strVal=\"\";}\n"
"std::string strGetString() const\n"
"{return m_strVal.c_str();}\n"
"const std::string strGetString1() const\n"
"{return m_strVal.c_str();}\n"
"private:\n"
"std::string m_strVal;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A{\n"
"public:\n"
"A(){m_strVal=\"\";}\n"
"std::string strGetString()\n"
"{return m_strVal.c_str();}\n"
"private:\n"
"std::string m_strVal;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString' can be const.\n", errout.str());
checkConst("class A{\n"
"public:\n"
"A(){m_strVal=\"\";}\n"
"const std::string strGetString1()\n"
"{return m_strVal.c_str();}\n"
"private:\n"
"std::string m_strVal;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetString1' can be const.\n", errout.str());
checkConst("class A{\n"
"public:\n"
"A(){m_strVec.push_back(\"\");}\n"
"size_t strGetSize()\n"
"{return m_strVec.size();}\n"
"private:\n"
"std::vector m_strVec;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetSize' can be const.\n", errout.str());
checkConst("class A{\n"
"public:\n"
"A(){m_strVec.push_back(\"\");}\n"
"bool strGetEmpty()\n"
"{return m_strVec.empty();}\n"
"private:\n"
"std::vector m_strVec;\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'A::strGetEmpty' can be const.\n", errout.str());
}
void const26() { // ticket #1847
checkConst("class DelayBase {\n"
"public:\n"
"void swapSpecificDelays(int index1, int index2) {\n"
" std::swap(delays_[index1], delays_[index2]);\n"
"}\n"
"float delays_[4];\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct DelayBase {\n"
" float swapSpecificDelays(int index1) {\n"
" return delays_[index1];\n"
" }\n"
" float delays_[4];\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Technically the member function 'DelayBase::swapSpecificDelays' can be const.\n", errout.str());
}
void const27() { // ticket #1882
checkConst("class A {\n"
"public:\n"
" A(){m_d=1.0; m_iRealVal=2.0;}\n"
" double dGetValue();\n"
"private:\n"
" double m_d;\n"
" double m_iRealVal;\n"
"};\n"
"double A::dGetValue() {\n"
" double dRet = m_iRealVal;\n"
" if( m_d != 0 )\n"
" return m_iRealVal / m_d;\n"
" return dRet;\n"
"};", nullptr, true);
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'A::dGetValue' can be const.\n", errout.str());
}
void const28() { // ticket #1883
checkConst("class P {\n"
"public:\n"
" P() { x=0.0; y=0.0; }\n"
" double x,y;\n"
"};\n"
"class A : public P {\n"
"public:\n"
" A():P(){}\n"
" void SetPos(double xPos, double yPos) {\n"
" x=xPos;\n"
" y=yPos;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class AA : public P {\n"
"public:\n"
" AA():P(){}\n"
" inline void vSetXPos(int x_)\n"
" {\n"
" UnknownScope::x = x_;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class AA {\n"
"public:\n"
" AA():P(){}\n"
" inline void vSetXPos(int x_)\n"
" {\n"
" UnknownScope::x = x_;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'AA::vSetXPos' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const29() { // ticket #1922
checkConst("class test {\n"
" public:\n"
" test();\n"
" const char* get() const;\n"
" char* get();\n"
" private:\n"
" char* value_;\n"
"};\n"
"test::test()\n"
"{\n"
" value_ = 0;\n"
"}\n"
"const char* test::get() const\n"
"{\n"
" return value_;\n"
"}\n"
"char* test::get()\n"
"{\n"
" return value_;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const30() {
// check for false negatives
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived : public Base {\n"
"public:\n"
" int get() {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'Derived::get' can be const.\n", errout.str());
checkConst("class Base1 {\n"
"public:\n"
" int a;\n"
"};\n"
"class Base2 {\n"
"public:\n"
" int b;\n"
"};\n"
"class Derived : public Base1, public Base2 {\n"
"public:\n"
" int getA() {\n"
" return a;\n"
" }\n"
" int getB() {\n"
" return b;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:11]: (style, inconclusive) Technically the member function 'Derived::getA' can be const.\n"
"[test.cpp:14]: (style, inconclusive) Technically the member function 'Derived::getB' can be const.\n", errout.str());
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived1 : public Base { };\n"
"class Derived2 : public Derived1 {\n"
"public:\n"
" int get() {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Derived2::get' can be const.\n", errout.str());
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived1 : public Base { };\n"
"class Derived2 : public Derived1 { };\n"
"class Derived3 : public Derived2 { };\n"
"class Derived4 : public Derived3 {\n"
"public:\n"
" int get() {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:10]: (style, inconclusive) Technically the member function 'Derived4::get' can be const.\n", errout.str());
// check for false positives
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived : public Base {\n"
"public:\n"
" int get() const {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Base1 {\n"
"public:\n"
" int a;\n"
"};\n"
"class Base2 {\n"
"public:\n"
" int b;\n"
"};\n"
"class Derived : public Base1, public Base2 {\n"
"public:\n"
" int getA() const {\n"
" return a;\n"
" }\n"
" int getB() const {\n"
" return b;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived1 : public Base { };\n"
"class Derived2 : public Derived1 {\n"
"public:\n"
" int get() const {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Base {\n"
"public:\n"
" int a;\n"
"};\n"
"class Derived1 : public Base { };\n"
"class Derived2 : public Derived1 { };\n"
"class Derived3 : public Derived2 { };\n"
"class Derived4 : public Derived3 {\n"
"public:\n"
" int get() const {\n"
" return a;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const31() {
checkConst("namespace std { }\n"
"class Fred {\n"
"public:\n"
" int a;\n"
" int get() { return a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'Fred::get' can be const.\n", errout.str());
}
void const32() {
checkConst("class Fred {\n"
"public:\n"
" std::string a[10];\n"
" void seta() { a[0] = \"\"; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const33() {
checkConst("class derived : public base {\n"
"public:\n"
" void f(){}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const34() { // ticket #1964
checkConst("class Bar {\n"
" void init(Foo * foo) {\n"
" foo.bar = this;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const35() { // ticket #2001
checkConst("namespace N\n"
"{\n"
" class Base\n"
" {\n"
" };\n"
"}\n"
"namespace N\n"
"{\n"
" class Derived : public Base\n"
" {\n"
" public:\n"
" int getResourceName() { return var; }\n"
" int var;\n"
" };\n"
"}");
ASSERT_EQUALS("[test.cpp:12]: (style, inconclusive) Technically the member function 'N::Derived::getResourceName' can be const.\n", errout.str());
checkConst("namespace N\n"
"{\n"
" class Base\n"
" {\n"
" public:\n"
" int getResourceName();\n"
" int var;\n"
" };\n"
"}\n"
"int N::Base::getResourceName() { return var; }");
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
checkConst("namespace N\n"
"{\n"
" class Base\n"
" {\n"
" public:\n"
" int getResourceName();\n"
" int var;\n"
" };\n"
"}\n"
"namespace N\n"
"{\n"
" int Base::getResourceName() { return var; }\n"
"}");
ASSERT_EQUALS("[test.cpp:12] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
checkConst("namespace N\n"
"{\n"
" class Base\n"
" {\n"
" public:\n"
" int getResourceName();\n"
" int var;\n"
" };\n"
"}\n"
"using namespace N;\n"
"int Base::getResourceName() { return var; }");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'N::Base::getResourceName' can be const.\n", errout.str());
}
void const36() { // ticket #2003
checkConst("class Foo {\n"
"public:\n"
" Blue::Utility::Size m_MaxQueueSize;\n"
" void SetMaxQueueSize(Blue::Utility::Size a_MaxQueueSize)\n"
" {\n"
" m_MaxQueueSize = a_MaxQueueSize;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const37() { // ticket #2081 and #2085
checkConst("class A\n"
"{\n"
"public:\n"
" A(){};\n"
" std::string operator+(const char *c)\n"
" {\n"
" return m_str+std::string(c);\n"
" }\n"
"private:\n"
" std::string m_str;\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'A::operator+' can be const.\n", errout.str());
checkConst("class Fred\n"
"{\n"
"private:\n"
" long x;\n"
"public:\n"
" Fred() {\n"
" x = 0;\n"
" }\n"
" bool isValid() {\n"
" return (x == 0x11224488);\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'Fred::isValid' can be const.\n", errout.str());
}
void const38() { // ticket #2135
checkConst("class Foo {\n"
"public:\n"
" ~Foo() { delete oArq; }\n"
" Foo(): oArq(new std::ofstream(\"...\")) {}\n"
" void MyMethod();\n"
"private:\n"
" std::ofstream *oArq;\n"
"};\n"
"void Foo::MyMethod()\n"
"{\n"
" (*oArq) << \"\";\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const39() {
checkConst("class Foo\n"
"{\n"
" int * p;\n"
"public:\n"
" Foo () : p(0) { }\n"
" int * f();\n"
" const int * f() const;\n"
"};\n"
"const int * Foo::f() const\n"
"{\n"
" return p;\n"
"}\n"
"int * Foo::f()\n"
"{\n"
" return p;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const40() { // ticket #2228
checkConst("class SharedPtrHolder\n"
"{\n"
" private:\n"
" std::tr1::shared_ptr pView;\n"
" public:\n"
" SharedPtrHolder()\n"
" { }\n"
" void SetView(const std::shared_ptr & aView)\n"
" {\n"
" pView = aView;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const41() { // ticket #2255
checkConst("class Fred\n"
"{\n"
" ::std::string m_name;\n"
"public:\n"
" void SetName(const ::std::string & name)\n"
" {\n"
" m_name = name;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class SharedPtrHolder\n"
"{\n"
" ::std::tr1::shared_ptr pNum;\n"
" public :\n"
" void SetNum(const ::std::tr1::shared_ptr & apNum)\n"
" {\n"
" pNum = apNum;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class SharedPtrHolder2\n"
"{\n"
" public:\n"
" typedef ::std::tr1::shared_ptr IntSharedPtr;\n"
" private:\n"
" IntSharedPtr pNum;\n"
" public :\n"
" void SetNum(const IntSharedPtr & apNum)\n"
" {\n"
" pNum = apNum;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct IntPtrTypes\n"
"{\n"
" typedef ::std::tr1::shared_ptr Shared;\n"
"};\n"
"class SharedPtrHolder3\n"
"{\n"
" private:\n"
" IntPtrTypes::Shared pNum;\n"
" public :\n"
" void SetNum(const IntPtrTypes::Shared & apNum)\n"
" {\n"
" pNum = apNum;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("template \n"
"struct PtrTypes\n"
"{\n"
" typedef ::std::tr1::shared_ptr Shared;\n"
"};\n"
"class SharedPtrHolder4\n"
"{\n"
" private:\n"
" PtrTypes::Shared pNum;\n"
" public :\n"
" void SetNum(const PtrTypes::Shared & apNum)\n"
" {\n"
" pNum = apNum;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const42() { // ticket #2282
checkConst("class Fred\n"
"{\n"
"public:\n"
" struct AB { };\n"
" bool f(AB * ab);\n"
"};\n"
"bool Fred::f(Fred::AB * ab)\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class Fred\n"
"{\n"
"public:\n"
" struct AB {\n"
" struct CD { };\n"
" };\n"
" bool f(AB::CD * cd);\n"
"};\n"
"bool Fred::f(Fred::AB::CD * cd)\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("namespace NS {\n"
" class Fred\n"
" {\n"
" public:\n"
" struct AB {\n"
" struct CD { };\n"
" };\n"
" bool f(AB::CD * cd);\n"
" };\n"
" bool Fred::f(Fred::AB::CD * cd)\n"
" {\n"
" }\n"
"}");
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("namespace NS {\n"
" class Fred\n"
" {\n"
" public:\n"
" struct AB {\n"
" struct CD { };\n"
" };\n"
" bool f(AB::CD * cd);\n"
" };\n"
"}\n"
"bool NS::Fred::f(NS::Fred::AB::CD * cd)\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'NS::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class Foo {\n"
" class Fred\n"
" {\n"
" public:\n"
" struct AB {\n"
" struct CD { };\n"
" };\n"
" bool f(AB::CD * cd);\n"
" };\n"
"};\n"
"bool Foo::Fred::f(Foo::Fred::AB::CD * cd)\n"
"{\n"
"}");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:8]: (performance, inconclusive) Technically the member function 'Foo::Fred::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const43() { // ticket 2377
checkConst("class A\n"
"{\n"
"public:\n"
" void foo( AA::BB::CC::DD b );\n"
" AA::BB::CC::DD a;\n"
"};\n"
"void A::foo( AA::BB::CC::DD b )\n"
"{\n"
" a = b;\n"
"}");
ASSERT_EQUALS("", errout.str());
checkConst("namespace AA\n"
"{\n"
" namespace BB\n"
" {\n"
" namespace CC\n"
" {\n"
" struct DD\n"
" {};\n"
" }\n"
" }\n"
"}\n"
"class A\n"
"{\n"
" public:\n"
"\n"
" AA::BB::CC::DD a;\n"
" void foo(AA::BB::CC::DD b)\n"
" {\n"
" a = b;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("namespace ZZ\n"
"{\n"
" namespace YY\n"
" {\n"
" struct XX\n"
" {};\n"
" }\n"
"}\n"
"class B\n"
"{\n"
" public:\n"
" ZZ::YY::XX a;\n"
" void foo(ZZ::YY::XX b)\n"
" {\n"
" a = b;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const44() { // ticket 2595
checkConst("class A\n"
"{\n"
"public:\n"
" bool bOn;\n"
" bool foo()\n"
" {\n"
" return 0 != (bOn = bOn);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const45() { // ticket 2664
checkConst("namespace wraps {\n"
" class BaseLayout {};\n"
"}\n"
"namespace tools {\n"
" class WorkspaceControl :\n"
" public wraps::BaseLayout\n"
" {\n"
" int toGrid(int _value)\n"
" {\n"
" }\n"
" };\n"
"}");
ASSERT_EQUALS("[test.cpp:8]: (performance, inconclusive) Technically the member function 'tools::WorkspaceControl::toGrid' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const46() { // ticket 2663
checkConst("class Altren {\n"
"public:\n"
" int fun1() {\n"
" int a;\n"
" a++;\n"
" }\n"
" int fun2() {\n"
" b++;\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Altren::fun1' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:7]: (performance, inconclusive) Technically the member function 'Altren::fun2' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const47() { // ticket 2670
checkConst("class Altren {\n"
"public:\n"
" void foo() { delete this; }\n"
" void foo(int i) const { }\n"
" void bar() { foo(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class Altren {\n"
"public:\n"
" void foo() { delete this; }\n"
" void foo(int i) const { }\n"
" void bar() { foo(1); }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'Altren::foo' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:5]: (style, inconclusive) Technically the member function 'Altren::bar' can be const.\n", errout.str());
}
void const48() { // ticket 2672
checkConst("class S0 {\n"
" class S1 {\n"
" class S2 {\n"
" class S3 {\n"
" class S4 { };\n"
" };\n"
" };\n"
" };\n"
"};\n"
"class TextIterator {\n"
" S0::S1::S2::S3::S4 mCurrent, mSave;\n"
"public:\n"
" bool setTagColour();\n"
"};\n"
"bool TextIterator::setTagColour() {\n"
" mSave = mCurrent;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const49() { // ticket 2795
checkConst("class A {\n"
" private:\n"
" std::map _hash;\n"
" public:\n"
" A() : _hash() {}\n"
" unsigned int fetch(unsigned int key)\n" // cannot be 'const'
" {\n"
" return _hash[key];\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const50() { // ticket 2943
checkConst("class Altren\n"
"{\n"
" class SubClass : public std::vector\n"
" {\n"
" };\n"
"};\n"
"void _setAlign()\n"
"{\n"
" if (mTileSize.height > 0) return;\n"
" if (mEmptyView) return;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const51() { // ticket 3040
checkConst("class PSIPTable {\n"
"public:\n"
" PSIPTable() : _pesdata(0) { }\n"
" const unsigned char* pesdata() const { return _pesdata; }\n"
" unsigned char* pesdata() { return _pesdata; }\n"
" void SetSection(uint num) { pesdata()[6] = num; }\n"
"private:\n"
" unsigned char *_pesdata;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class PESPacket {\n"
"public:\n"
" PESPacket() : _pesdata(0) { }\n"
" const unsigned char* pesdata() const { return _pesdata; }\n"
" unsigned char* pesdata() { return _pesdata; }\n"
"private:\n"
" unsigned char *_pesdata;\n"
"};\n"
"class PSIPTable : public PESPacket\n"
"{\n"
"public:\n"
" void SetSection(uint num) { pesdata()[6] = num; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const52() { // ticket 3048
checkConst("class foo {\n"
" void DoSomething(int &a) const { a = 1; }\n"
" void DoSomethingElse() { DoSomething(bar); }\n"
"private:\n"
" int bar;\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'foo::DoSomething' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const53() { // ticket 3049
checkConst("class A {\n"
" public:\n"
" A() : foo(false) {};\n"
" virtual bool One(bool b = false) { foo = b; return false; }\n"
" private:\n"
" bool foo;\n"
"};\n"
"class B : public A {\n"
" public:\n"
" B() {};\n"
" bool One(bool b = false) { return false; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const54() { // ticket 3052
checkConst("class Example {\n"
" public:\n"
" void Clear(void) { Example tmp; (*this) = tmp; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const55() {
checkConst("class MyObject {\n"
" int tmp;\n"
" MyObject() : tmp(0) {}\n"
"public:\n"
" void set(std::stringstream &in) { in >> tmp; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const56() { // ticket #3149
checkConst("class MyObject {\n"
"public:\n"
" void foo(int x) {\n"
" switch (x) { }\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class A\n"
"{\n"
" protected:\n"
" unsigned short f (unsigned short X);\n"
" public:\n"
" A ();\n"
"};\n"
"\n"
"unsigned short A::f (unsigned short X)\n"
"{\n"
" enum ERetValues {RET_NOK = 0, RET_OK = 1};\n"
" enum ETypes {FLOAT_TYPE = 1, INT_TYPE = 2};\n"
"\n"
" try\n"
" {\n"
" switch (X)\n"
" {\n"
" case FLOAT_TYPE:\n"
" {\n"
" return RET_OK;\n"
" }\n"
" case INT_TYPE:\n"
" {\n"
" return RET_OK;\n"
" }\n"
" default:\n"
" {\n"
" return RET_NOK;\n"
" }\n"
" }\n"
" }\n"
" catch (...)\n"
" {\n"
" return RET_NOK;\n"
" }\n"
"\n"
" return RET_NOK;\n"
"}");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'A::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("class MyObject {\n"
"public:\n"
" void foo(int x) {\n"
" for (int i = 0; i < 5; i++) { }\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const57() { // tickets #2669 and #2477
checkConst("namespace MyGUI\n"
"{\n"
" namespace types\n"
" {\n"
" struct TSize {};\n"
" struct TCoord {\n"
" TSize size() const { }\n"
" };\n"
" }\n"
" typedef types::TSize IntSize;\n"
" typedef types::TCoord IntCoord;\n"
"}\n"
"class SelectorControl\n"
"{\n"
" MyGUI::IntSize getSize()\n"
" {\n"
" return mCoordValue.size();\n"
" }\n"
"private:\n"
" MyGUI::IntCoord mCoordValue;\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:7]: (performance, inconclusive) Technically the member function 'MyGUI::types::TCoord::size' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:15]: (style, inconclusive) Technically the member function 'SelectorControl::getSize' can be const.\n",
"[test.cpp:7]: (performance, inconclusive) Technically the member function 'MyGUI::types::TCoord::size' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct Foo {\n"
" Bar b;\n"
" void foo(Foo f) {\n"
" b.run();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct Bar {\n"
" int i = 0;\n"
" void run() { i++; }\n"
"};\n"
"struct Foo {\n"
" Bar b;\n"
" void foo(Foo f) {\n"
" b.run();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct Bar {\n"
" void run() const { }\n"
"};\n"
"struct Foo {\n"
" Bar b;\n"
" void foo(Foo f) {\n"
" b.run();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Bar::run' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:6]: (style, inconclusive) Technically the member function 'Foo::foo' can be const.\n", errout.str());
}
void const58() {
checkConst("struct MyObject {\n"
" void foo(Foo f) {\n"
" f.clear();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct MyObject {\n"
" int foo(Foo f) {\n"
" return f.length();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'MyObject::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct MyObject {\n"
" Foo f;\n"
" int foo() {\n"
" return f.length();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct MyObject {\n"
" std::string f;\n"
" int foo() {\n"
" return f.length();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'MyObject::foo' can be const.\n", errout.str());
}
void const59() { // ticket #4646
checkConst("class C {\n"
"public:\n"
" inline void operator += (const int &x ) { re += x; }\n"
" friend inline void exp(C & c, const C & x) { }\n"
"protected:\n"
" int re;\n"
" int im;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const60() { // ticket #3322
checkConst("class MyString {\n"
"public:\n"
" MyString() : m_ptr(0){}\n"
" MyString& operator+=( const MyString& rhs ) {\n"
" delete m_ptr;\n"
" m_ptr = new char[42];\n"
" }\n"
" MyString append( const MyString& str )\n"
" { return operator+=( str ); }\n"
" char *m_ptr;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class MyString {\n"
"public:\n"
" MyString() : m_ptr(0){}\n"
" MyString& operator+=( const MyString& rhs );\n"
" MyString append( const MyString& str )\n"
" { return operator+=( str ); }\n"
" char *m_ptr;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const61() { // ticket #5606 - don't crash
// this code is invalid so a false negative is OK
checkConst("class MixerParticipant : public MixerParticipant {\n"
" int GetAudioFrame();\n"
"};\n"
"int MixerParticipant::GetAudioFrame() {\n"
" return 0;\n"
"}");
// this code is invalid so a false negative is OK
checkConst("class MixerParticipant : public MixerParticipant {\n"
" bool InitializeFileReader() {\n"
" printf(\"music\");\n"
" }\n"
"};");
// Based on an example from SVN source code causing an endless recursion within CheckClass::isConstMemberFunc()
// A more complete example including a template declaration like
// template class Hash{/* ... */};
// didn't .
checkConst("template<>\n"
"class Hash {\n"
"protected:\n"
" typedef Key::key_type key_type;\n"
" void set(const Key& key);\n"
"};\n"
"template\n"
"class Hash : private Hash {\n"
" typedef Hash inherited;\n"
" void set(const Key& key) {\n"
" inherited::set(inherited::Key(key));\n"
" }\n"
"};\n", nullptr, false);
ASSERT_EQUALS("", errout.str());
}
void const62() {
checkConst("class A {\n"
" private:\n"
" std::unordered_map _hash;\n"
" public:\n"
" A() : _hash() {}\n"
" unsigned int fetch(unsigned int key)\n" // cannot be 'const'
" {\n"
" return _hash[key];\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const63() {
checkConst("struct A {\n"
" std::string s;\n"
" void clear() {\n"
" std::string* p = &s;\n"
" p->clear();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A {\n"
" std::string s;\n"
" void clear() {\n"
" std::string& r = s;\n"
" r.clear();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A {\n"
" std::string s;\n"
" void clear() {\n"
" std::string& r = sth; r = s;\n"
" r.clear();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
checkConst("struct A {\n"
" std::string s;\n"
" void clear() {\n"
" const std::string* p = &s;\n"
" p->somefunction();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
checkConst("struct A {\n"
" std::string s;\n"
" void clear() {\n"
" const std::string& r = s;\n"
" r.somefunction();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'A::clear' can be const.\n", errout.str());
}
void const64() {
checkConst("namespace B {\n"
" namespace D {\n"
" typedef int DKIPtr;\n"
" }\n"
" class ZClass {\n"
" void set(const ::B::D::DKIPtr& p) {\n"
" membervariable = p;\n"
" }\n"
" ::B::D::DKIPtr membervariable;\n"
" };\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const65() {
checkConst("template \n"
"class TemplateClass {\n"
"public:\n"
" TemplateClass() { }\n"
"};\n"
"template <>\n"
"class TemplateClass {\n"
"public:\n"
" TemplateClass() { }\n"
"};\n"
"int main() {\n"
" TemplateClass a;\n"
" TemplateClass b;\n"
" return 0;\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void const66() {
checkConst("struct C {\n"
" C() : n(0) {}\n"
" void f(int v) { g((char *) &v); }\n"
" void g(char *) { n++; }\n"
" int n;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const67() { // #9193
checkConst("template >\n"
"class TestList {\n"
"public:\n"
" LIST_T m_list;\n"
"};\n"
"class Test {\n"
"public:\n"
" const std::list>& get() { return m_test.m_list; }\n"
" TestList> m_test;\n"
"};");
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Test::get' can be const.\n", errout.str());
}
void const68() { // #6471
checkConst("class MyClass {\n"
" void clear() {\n"
" SVecPtr v = (SVecPtr) m_data;\n"
" v->clear();\n"
" }\n"
" void* m_data;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const69() { // #9806
checkConst("struct A {\n"
" int a = 0;\n"
" template void call(const Args &... args) { a = 1; }\n"
" template auto call(const Args &... args) -> T {\n"
" a = 2;\n"
" return T{};\n"
" }\n"
"};\n"
"\n"
"struct B : public A {\n"
" void test() {\n"
" call();\n"
" call(1, 2, 3);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const70() {
checkConst("struct A {\n"
" template void call(Args ... args) {\n"
" func(this);\n"
" }\n"
"\n"
" void test() {\n"
" call(1, 2);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void const71() { // #10146
checkConst("struct Bar {\n"
" int j = 5;\n"
" void f(int& i) const { i += j; }\n"
"};\n"
"struct Foo {\n"
" Bar bar;\n"
" int k{};\n"
" void g() { bar.f(k); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" A a;\n"
" void f(int j, int*& p) {\n"
" p = &(((a[j])));\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const72() { // #10520
checkConst("struct S {\n"
" explicit S(int* p) : mp(p) {}\n"
" int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S{ &i }; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" explicit S(int* p) : mp(p) {}\n"
" int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S(&i); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S{ &i }; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return { &i }; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" explicit S(const int* p) : mp(p) {}\n"
" const int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S{ &i }; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'C::f' can be const.\n", errout.str());
checkConst("struct S {\n"
" explicit S(const int* p) : mp(p) {}\n"
" const int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S(&i); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'C::f' can be const.\n", errout.str());
checkConst("struct S {\n"
" const int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return S{ &i }; }\n"
"};\n");
TODO_ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'C::f' can be const.\n", "", errout.str());
checkConst("struct S {\n"
" const int* mp{};\n"
"};\n"
"struct C {\n"
" int i{};\n"
" S f() { return { &i }; }\n"
"};\n");
TODO_ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'C::f' can be const.\n", "", errout.str());
}
void const73() {
checkConst("struct A {\n"
" int* operator[](int i);\n"
" const int* operator[](int i) const;\n"
"};\n"
"struct S {\n"
" A a;\n"
" void f(int j) {\n"
" int* p = a[j];\n"
" *p = 0;\n"
" }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n" // #10758
" T* h;\n"
" void f(); \n"
"};\n"
"void S::f() {\n"
" char* c = h->x[y];\n"
"};\n");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:3]: (style, inconclusive) Technically the member function 'S::f' can be const.\n", errout.str());
}
void const74() { // #10671
checkConst("class A {\n"
" std::vector m_str;\n"
"public:\n"
" A() {}\n"
" void bar(void) {\n"
" for(std::vector::const_iterator it = m_str.begin(); it != m_str.end(); ++it) {;}\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'A::bar' can be const.\n", errout.str());
// Don't crash
checkConst("struct S {\n"
" std::vector v;\n"
" void f() const;\n"
"};\n"
"void S::f() const {\n"
" for (std::vector::const_iterator it = v.begin(), end = v.end(); it != end; ++it) {}\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const75() { // #10065
checkConst("namespace N { int i = 0; }\n"
"struct S {\n"
" int i;\n"
" void f() {\n"
" if (N::i) {}\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'S::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int i = 0;\n"
"struct S {\n"
" int i;\n"
" void f() {\n"
" if (::i) {}\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (performance, inconclusive) Technically the member function 'S::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("namespace N {\n"
" struct S {\n"
" int i;\n"
" void f() {\n"
" if (N::S::i) {}\n"
" }\n"
" };\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'N::S::f' can be const.\n", errout.str());
}
void const76() { // #10825
checkConst("struct S {\n"
" enum E {};\n"
" void f(const T* t);\n"
" E e;\n"
"};\n"
"struct T { void e(); };\n"
"void S::f(const T* t) {\n"
" const_cast(t)->e();\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (performance, inconclusive) Technically the member function 'S::f' can be static (but you may consider moving to unnamed namespace).\n",
errout.str());
}
void const77() {
checkConst("template \n" // #10307
"struct S {\n"
" std::vector const* f() const { return p; }\n"
" std::vector const* p;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n" // #10311
" std::vector v;\n"
" std::vector& f() { return v; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const78() { // #10315
checkConst("struct S {\n"
" typedef void(S::* F)();\n"
" void g(F f);\n"
"};\n"
"void S::g(F f) {\n"
" (this->*f)();\n"
"}\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" using F = void(S::*)();\n"
" void g(F f);\n"
"};\n"
"void S::g(F f) {\n"
" (this->*f)();\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const79() { // #9861
checkConst("class A {\n"
"public:\n"
" char* f() {\n"
" return nullptr;\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'A::f' can be static (but you may consider moving to unnamed namespace).\n",
errout.str());
}
void const80() { // #11328
checkConst("struct B { static void b(); };\n"
"struct S : B {\n"
" static void f() {}\n"
" void g() const;\n"
" void h();\n"
" void k();\n"
" void m();\n"
" void n();\n"
" int i;\n"
"};\n"
"void S::g() const {\n"
" this->f();\n"
"}\n"
"void S::h() {\n"
" this->f();\n"
"}\n"
"void S::k() {\n"
" if (i)\n"
" this->f();\n"
"}\n"
"void S::m() {\n"
" this->B::b();\n"
"}\n"
"void S::n() {\n"
" this->h();\n"
"}\n");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:4]: (performance, inconclusive) Technically the member function 'S::g' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:14] -> [test.cpp:5]: (performance, inconclusive) Technically the member function 'S::h' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:17] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'S::k' can be const.\n"
"[test.cpp:21] -> [test.cpp:7]: (performance, inconclusive) Technically the member function 'S::m' can be static (but you may consider moving to unnamed namespace).\n",
errout.str());
}
void const81() {
checkConst("struct A {\n" // #11330
" bool f() const;\n"
"};\n"
"struct S {\n"
" std::shared_ptr a;\n"
" void g() {\n"
" if (a->f()) {}\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'S::g' can be const.\n",
errout.str());
checkConst("struct A {\n" // #11499
" void f() const;\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
" const T* operator->() const;\n"
"};\n"
"struct S {\n"
" P p;\n"
" void g() { p->f(); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:11]: (style, inconclusive) Technically the member function 'S::g' can be const.\n",
errout.str());
checkConst("struct A {\n"
" void f(int) const;\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
" const T* operator->() const;\n"
"};\n"
"struct S {\n"
" P p;\n"
" void g() { p->f(1); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:11]: (style, inconclusive) Technically the member function 'S::g' can be const.\n", errout.str());
checkConst("struct A {\n"
" void f(void*) const;\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
" const T* operator->() const;\n"
" P& operator=(P) {\n"
" return *this;\n"
" }\n"
"};\n"
"struct S {\n"
" P p;\n"
" std::vector g() { p->f(nullptr); return {}; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:14]: (style, inconclusive) Technically the member function 'S::g' can be const.\n", errout.str());
checkConst("struct A {\n"
" void f();\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
" const T* operator->() const;\n"
"};\n"
"struct S {\n"
" P p;\n"
" void g() { p->f(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A {\n"
" void f() const;\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
"};\n"
"struct S {\n"
" P p;\n"
" void g() { p->f(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A {\n"
" void f(int&) const;\n"
"};\n"
"template\n"
"struct P {\n"
" T* operator->();\n"
" const T* operator->() const;\n"
"};\n"
"struct S {\n"
" P p;\n"
" int i;\n"
" void g() { p->f(i); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct A {\n" // #11501
" enum E { E1 };\n"
" virtual void f(E) const = 0;\n"
"};\n"
"struct F {\n"
" A* a;\n"
" void g() { a->f(A::E1); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:7]: (style, inconclusive) Technically the member function 'F::g' can be const.\n", errout.str());
}
void const82() { // #11513
checkConst("struct S {\n"
" int i;\n"
" void h(bool) const;\n"
" void g() { h(i == 1); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'S::g' can be const.\n",
errout.str());
checkConst("struct S {\n"
" int i;\n"
" void h(int, int*) const;\n"
" void g() { int a; h(i, &a); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'S::g' can be const.\n",
errout.str());
}
void const83() {
checkConst("struct S {\n"
" int i1, i2;\n"
" void f(bool b);\n"
" void g(bool b, int j);\n"
"};\n"
"void S::f(bool b) {\n"
" int& r = b ? i1 : i2;\n"
" r = 5;\n"
"}\n"
"void S::g(bool b, int j) {\n"
" int& r = b ? j : i2;\n"
" r = 5;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const84() {
checkConst("class S {};\n" // #11616
"struct T {\n"
" T(const S*);\n"
" T(const S&);\n"
"};\n"
"struct C {\n"
" const S s;\n"
" void f1() {\n"
" T t(&s);\n"
" }\n"
" void f2() {\n"
" T t(s);\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'C::f1' can be const.\n"
"[test.cpp:11]: (style, inconclusive) Technically the member function 'C::f2' can be const.\n",
errout.str());
}
void const85() { // #11618
checkConst("struct S {\n"
" int a[2], b[2];\n"
" void f() { f(a, b); }\n"
" static void f(const int p[2], int q[2]);\n"
"};\n"
"void S::f(const int p[2], int q[2]) {\n"
" q[0] = p[0];\n"
" q[1] = p[1];\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const86() { // #11621
checkConst("struct S { int* p; };\n"
"struct T { int m; int* p; };\n"
"struct U {\n"
" int i;\n"
" void f() { S s = { &i }; }\n"
" void g() { int* a[] = { &i }; }\n"
" void h() { T t = { 1, &i }; }\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const87() {
checkConst("struct Tokenizer {\n" // #11720
" bool isCPP() const {\n"
" return cpp;\n"
" }\n"
" bool cpp;\n"
"};\n"
"struct Check {\n"
" const Tokenizer* const mTokenizer;\n"
" const int* const mSettings;\n"
"};\n"
"struct CheckA : Check {\n"
" static bool test(const std::string& funcname, const int* settings, bool cpp);\n"
"};\n"
"struct CheckB : Check {\n"
" bool f(const std::string& s);\n"
"};\n"
"bool CheckA::test(const std::string& funcname, const int* settings, bool cpp) {\n"
" return !funcname.empty() && settings && cpp;\n"
"}\n"
"bool CheckB::f(const std::string& s) {\n"
" return CheckA::test(s, mSettings, mTokenizer->isCPP());\n"
"}\n");
ASSERT_EQUALS("[test.cpp:20] -> [test.cpp:15]: (style, inconclusive) Technically the member function 'CheckB::f' can be const.\n", errout.str());
checkConst("void g(int&);\n"
"struct S {\n"
" struct { int i; } a[1];\n"
" void f() { g(a[0].i); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" const int& g() const { return i; }\n"
" int i;\n"
"};\n"
"void h(int, const int&);\n"
"struct T {\n"
" S s;\n"
" int j;\n"
" void f() { h(j, s.g()); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'T::f' can be const.\n", errout.str());
checkConst("struct S {\n"
" int& g() { return i; }\n"
" int i;\n"
"};\n"
"void h(int, int&);\n"
"struct T {\n"
" S s;\n"
" int j;\n"
" void f() { h(j, s.g()); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n"
" const int& g() const { return i; }\n"
" int i;\n"
"};\n"
"void h(int, const int*);\n"
"struct T {\n"
" S s;\n"
" int j;\n"
" void f() { h(j, &s.g()); }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'T::f' can be const.\n", errout.str());
checkConst("struct S {\n"
" int& g() { return i; }\n"
" int i;\n"
"};\n"
"void h(int, int*);\n"
"struct T {\n"
" S s;\n"
" int j;\n"
" void f() { h(j, &s.g()); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("void j(int** x);\n"
"void k(int* const* y);\n"
"struct S {\n"
" int* p;\n"
" int** q;\n"
" int* const* r;\n"
" void f1() { j(&p); }\n"
" void f2() { j(q); }\n"
" void g1() { k(&p); }\n"
" void g2() { k(q); }\n"
" void g3() { k(r); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkConst("void m(int*& r);\n"
"void n(int* const& s);\n"
"struct T {\n"
" int i;\n"
" int* p;\n"
" void f1() { m(p); }\n"
" void f2() { n(&i); }\n"
" void f3() { n(p); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void const88() { // #11626
checkConst("struct S {\n"
" bool f() { return static_cast(p); }\n"
" const int* g() { return const_cast(p); }\n"
" const int* h() { return (const int*)p; }\n"
" char* j() { return reinterpret_cast(p); }\n"
" char* k() { return (char*)p; }\n"
" int* p;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Technically the member function 'S::f' can be const.\n"
"[test.cpp:3]: (style, inconclusive) Technically the member function 'S::g' can be const.\n"
"[test.cpp:4]: (style, inconclusive) Technically the member function 'S::h' can be const.\n",
errout.str());
checkConst("struct S {\n"
" bool f() { return p != nullptr; }\n"
" std::shared_ptr p;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Technically the member function 'S::f' can be const.\n",
errout.str());
}
void const89() {
checkConst("struct S {\n" // #11654
" void f(bool b);\n"
" int i;\n"
"};\n"
"void S::f(bool b) {\n"
" if (i && b)\n"
" f(false);\n"
"}\n");
ASSERT_EQUALS("[test.cpp:5] -> [test.cpp:2]: (style, inconclusive) Technically the member function 'S::f' can be const.\n", errout.str());
checkConst("struct S {\n"
" void f(int& r);\n"
" int i;\n"
"};\n"
"void S::f(int& r) {\n"
" r = 0;\n"
" if (i)\n"
" f(i);\n"
"}\n");
ASSERT_EQUALS("", errout.str());
checkConst("struct S {\n" // #11744
" S* p;\n"
" int f() {\n"
" if (p)\n"
" return 1 + p->f();\n"
" return 1;\n"
" }\n"
" int g(int i) {\n"
" if (i > 0)\n"
" return i + g(i - 1);\n"
" return 0;\n"
" }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Technically the member function 'S::f' can be const.\n"
"[test.cpp:8]: (performance, inconclusive) Technically the member function 'S::g' can be static (but you may consider moving to unnamed namespace).\n",
errout.str());
}
void const90() { // #11637
checkConst("class S {};\n"
"struct C {\n"
" C(const S*);\n"
" C(const S&);\n"
"};\n"
"class T {\n"
" S s;\n"
" void f1() { C c = C{ &s }; }\n"
" void f2() { C c = C{ s }; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'T::f1' can be const.\n"
"[test.cpp:9]: (style, inconclusive) Technically the member function 'T::f2' can be const.\n",
errout.str());
}
void const91() { // #11790
checkConst("struct S {\n"
" char* p;\n"
" template \n"
" T* get() {\n"
" return reinterpret_cast(p);\n"
" }\n"
"};\n"
"const int* f(S& s) {\n"
" return s.get();\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void const_handleDefaultParameters() {
checkConst("struct Foo {\n"
" void foo1(int i, int j = 0) {\n"
" return func(this);\n"
" }\n"
" int bar1() {\n"
" return foo1(1);\n"
" }\n"
" int bar2() {\n"
" return foo1(1, 2);\n"
" }\n"
" int bar3() {\n"
" return foo1(1, 2, 3);\n"
" }\n"
" int bar4() {\n"
" return foo1();\n"
" }\n"
" void foo2(int i = 0) {\n"
" return func(this);\n"
" }\n"
" int bar5() {\n"
" return foo2();\n"
" }\n"
" void foo3() {\n"
" return func(this);\n"
" }\n"
" int bar6() {\n"
" return foo3();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:11]: (performance, inconclusive) Technically the member function 'Foo::bar3' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:14]: (performance, inconclusive) Technically the member function 'Foo::bar4' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void const_passThisToMemberOfOtherClass() {
checkConst("struct Foo {\n"
" void foo() {\n"
" Bar b;\n"
" b.takeFoo(this);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct Foo {\n"
" void foo() {\n"
" Foo f;\n"
" f.foo();\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Foo::foo' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A;\n" // #5839 - operator()
"struct B {\n"
" void operator()(A *a);\n"
"};\n"
"struct A {\n"
" void dostuff() {\n"
" B()(this);\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void assigningPointerToPointerIsNotAConstOperation() {
checkConst("struct s\n"
"{\n"
" int** v;\n"
" void f()\n"
" {\n"
" v = 0;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void assigningArrayElementIsNotAConstOperation() {
checkConst("struct s\n"
"{\n"
" ::std::string v[3];\n"
" void f()\n"
" {\n"
" v[0] = \"Happy new year!\";\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// increment/decrement => not const
void constincdec() {
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return ++a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return --a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a++; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a--; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return ++a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return --a; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a++; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a--; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct S {\n" // #10077
" int i{};\n"
" S& operator ++() { ++i; return *this; }\n"
" S operator ++(int) { S s = *this; ++(*this); return s; }\n"
" void f() { (*this)--; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void constassign1() {
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a-=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a+=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a*=-1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a;\n"
" void nextA() { return a/=-2; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a-=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a+=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a*=-1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a;\n"
"class Fred {\n"
" void nextA() { return a/=-2; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void constassign2() {
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a-=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a+=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" struct A { int a; } s;\n"
" void nextA() { return s.a*=-1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a-=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a+=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a*=-1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A { int a; } s;\n"
"class Fred {\n"
" void nextA() { return s.a/=-2; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a-=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a+=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a*=-1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("struct A { int a; };\n"
"class Fred {\n"
" A s;\n"
" void nextA() { return s.a/=-2; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// increment/decrement array element => not const
void constincdecarray() {
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return ++a[0]; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return --a[0]; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]++; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]--; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return ++a[0]; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return --a[0]; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]++; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]--; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
void constassignarray() {
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]-=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]+=1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]*=-1; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class Fred {\n"
" int a[2];\n"
" void nextA() { return a[0]/=-2; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]-=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]+=1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]*=-1; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst("int a[2];\n"
"class Fred {\n"
" void nextA() { return a[0]/=-2; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'Fred::nextA' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
}
// return pointer/reference => not const
void constReturnReference() {
checkConst("class Fred {\n"
" int a;\n"
" int &getR() { return a; }\n"
" int *getP() { return &a; }"
"};");
ASSERT_EQUALS("", errout.str());
}
// delete member variable => not const (but technically it can, it compiles without errors)
void constDelete() {
checkConst("class Fred {\n"
" int *a;\n"
" void clean() { delete a; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// A function that returns unknown types can't be const (#1579)
void constLPVOID() {
checkConst("class Fred {\n"
" UNKNOWN a() { return 0; };\n"
"};");
TODO_ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::a' can be static.\n", "", errout.str());
// #1579 - HDC
checkConst("class Fred {\n"
" foo bar;\n"
" UNKNOWN a() { return b; };\n"
"};");
ASSERT_EQUALS("", errout.str());
}
// a function that calls const functions can be const
void constFunc() {
checkConst("class Fred {\n"
" void f() const { };\n"
" void a() { f(); };\n"
"};");
ASSERT_EQUALS("[test.cpp:2]: (performance, inconclusive) Technically the member function 'Fred::f' can be static (but you may consider moving to unnamed namespace).\n"
"[test.cpp:3]: (style, inconclusive) Technically the member function 'Fred::a' can be const.\n", errout.str());
// ticket #1593
checkConst("class A\n"
"{\n"
" std::vector m_v;\n"
"public:\n"
" A(){}\n"
" unsigned int GetVecSize() {return m_v.size();}\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'A::GetVecSize' can be const.\n", errout.str());
checkConst("class A\n"
"{\n"
" std::vector m_v;\n"
"public:\n"
" A(){}\n"
" bool GetVecEmpty() {return m_v.empty();}\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'A::GetVecEmpty' can be const.\n", errout.str());
}
void constVirtualFunc() {
// base class has no virtual function
checkConst("class A { };\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func() { return b; }\n"
"};");
ASSERT_EQUALS("[test.cpp:6]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
checkConst("class A { };\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }");
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:6]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
// base class has no virtual function
checkConst("class A {\n"
"public:\n"
" int func();\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func() { return b; }\n"
"};");
ASSERT_EQUALS("[test.cpp:9]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
checkConst("class A {\n"
"public:\n"
" int func();\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }");
ASSERT_EQUALS("[test.cpp:11] -> [test.cpp:9]: (style, inconclusive) Technically the member function 'B::func' can be const.\n", errout.str());
// base class has virtual function
checkConst("class A {\n"
"public:\n"
" virtual int func();\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func() { return b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" virtual int func();\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
"public:\n"
" virtual int func() = 0;\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }");
ASSERT_EQUALS("", errout.str());
// base class has no virtual function
checkConst("class A {\n"
" int a;\n"
"public:\n"
" A() : a(0) { }\n"
" int func() { return a; }\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func() { return b; }\n"
"};\n"
"class C : public B {\n"
" int c;\n"
"public:\n"
" C() : c(0) { }\n"
" int func() { return c; }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'A::func' can be const.\n"
"[test.cpp:11]: (style, inconclusive) Technically the member function 'B::func' can be const.\n"
"[test.cpp:17]: (style, inconclusive) Technically the member function 'C::func' can be const.\n", errout.str());
checkConst("class A {\n"
" int a;\n"
"public:\n"
" A() : a(0) { }\n"
" int func();\n"
"};\n"
"int A::func() { return a; }\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }\n"
"class C : public B {\n"
" int c;\n"
"public:\n"
" C() : c(0) { }\n"
" int func();\n"
"};\n"
"int C::func() { return c; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (style, inconclusive) Technically the member function 'A::func' can be const.\n"
"[test.cpp:14] -> [test.cpp:12]: (style, inconclusive) Technically the member function 'B::func' can be const.\n"
"[test.cpp:21] -> [test.cpp:19]: (style, inconclusive) Technically the member function 'C::func' can be const.\n", errout.str());
// base class has virtual function
checkConst("class A {\n"
" int a;\n"
"public:\n"
" A() : a(0) { }\n"
" virtual int func() { return a; }\n"
"};\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func() { return b; }\n"
"};\n"
"class C : public B {\n"
" int c;\n"
"public:\n"
" C() : c(0) { }\n"
" int func() { return c; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkConst("class A {\n"
" int a;\n"
"public:\n"
" A() : a(0) { }\n"
" virtual int func();\n"
"};\n"
"int A::func() { return a; }\n"
"class B : public A {\n"
" int b;\n"
"public:\n"
" B() : b(0) { }\n"
" int func();\n"
"};\n"
"int B::func() { return b; }\n"
"class C : public B {\n"
" int c;\n"
"public:\n"
" C() : c(0) { }\n"
" int func();\n"
"};\n"
"int C::func() { return c; }");
ASSERT_EQUALS("", errout.str());
// ticket #1311
checkConst("class X {\n"
" int x;\n"
"public:\n"
" X(int x) : x(x) { }\n"
" int getX() { return x; }\n"
"};\n"
"class Y : public X {\n"
" int y;\n"
"public:\n"
" Y(int x, int y) : X(x), y(y) { }\n"
" int getY() { return y; }\n"
"};\n"
"class Z : public Y {\n"
" int z;\n"
"public:\n"
" Z(int x, int y, int z) : Y(x, y), z(z) { }\n"
" int getZ() { return z; }\n"
"};");
ASSERT_EQUALS("[test.cpp:5]: (style, inconclusive) Technically the member function 'X::getX' can be const.\n"
"[test.cpp:11]: (style, inconclusive) Technically the member function 'Y::getY' can be const.\n"
"[test.cpp:17]: (style, inconclusive) Technically the member function 'Z::getZ' can be const.\n", errout.str());
checkConst("class X {\n"
" int x;\n"
"public:\n"
" X(int x) : x(x) { }\n"
" int getX();\n"
"};\n"
"int X::getX() { return x; }\n"
"class Y : public X {\n"
" int y;\n"
"public:\n"
" Y(int x, int y) : X(x), y(y) { }\n"
" int getY();\n"
"};\n"
"int Y::getY() { return y; }\n"
"class Z : public Y {\n"
" int z;\n"
"public:\n"
" Z(int x, int y, int z) : Y(x, y), z(z) { }\n"
" int getZ();\n"
"};\n"
"int Z::getZ() { return z; }");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:5]: (style, inconclusive) Technically the member function 'X::getX' can be const.\n"
"[test.cpp:14] -> [test.cpp:12]: (style, inconclusive) Technically the member function 'Y::getY' can be const.\n"
"[test.cpp:21] -> [test.cpp:19]: (style, inconclusive) Technically the member function 'Z::getZ' can be const.\n", errout.str());
}
void constIfCfg() {
const char code[] = "struct foo {\n"
" int i;\n"
" void f() {\n"
//"#ifdef ABC\n"
//" i = 4;\n"
//"endif\n"
" }\n"
"};";
checkConst(code, &settings0, true);
ASSERT_EQUALS("[test.cpp:3]: (performance, inconclusive) Technically the member function 'foo::f' can be static (but you may consider moving to unnamed namespace).\n", errout.str());
checkConst(code, &settings0, false); // TODO: Set inconclusive to true (preprocess it)
ASSERT_EQUALS("", errout.str());
}
void constFriend() { // ticket #1921
const char code[] = "class foo {\n"
" friend void f() { }\n"
"};";
checkConst(code);
ASSERT_EQUALS("", errout.str());
}
void constUnion() { // ticket #2111
checkConst("class foo {\n"
"public:\n"
" union {\n"
" int i;\n"
" float f;\n"
" } d;\n"
" void setf(float x) {\n"
" d.f = x;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void constArrayOperator() {
checkConst("struct foo {\n"
" int x;\n"
" int y[5][724];\n"
" T a() {\n"
" return y[x++][6];\n"
" }\n"
" T b() {\n"
" return y[1][++x];\n"
" }\n"
" T c() {\n"
" return y[1][6];\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:10]: (style, inconclusive) Technically the member function 'foo::c' can be const.\n", errout.str());
}
void constRangeBasedFor() { // #5514
checkConst("class Fred {\n"
" int array[256];\n"
"public:\n"
" void f1() {\n"
" for (auto & e : array)\n"
" foo(e);\n"
" }\n"
" void f2() {\n"
" for (const auto & e : array)\n"
" foo(e);\n"
" }\n"
" void f3() {\n"
" for (decltype(auto) e : array)\n"
" foo(e);\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:8]: (style, inconclusive) Technically the member function 'Fred::f2' can be const.\n", errout.str());
}
void const_shared_ptr() { // #8674
checkConst("class Fred {\n"
"public:\n"
" std::shared_ptr getData();\n"
"private:\n"
" std::shared_ptr data;\n"
"};\n"
"\n"
"std::shared_ptr Fred::getData() { return data; }");
ASSERT_EQUALS("", errout.str());
}
void constPtrToConstPtr() {
checkConst("class Fred {\n"
"public:\n"
" const char *const *data;\n"
" const char *const *getData() { return data; }\n}");
ASSERT_EQUALS("[test.cpp:4]: (style, inconclusive) Technically the member function 'Fred::getData' can be const.\n", errout.str());
}
void constTrailingReturnType() { // #9814
checkConst("struct A {\n"
" int x = 1;\n"
" auto get() -> int & { return x; }\n"
"};");
ASSERT_EQUALS("", errout.str());
}
void staticArrayPtrOverload() {
checkConst("struct S {\n"
" template\n"
" void f(const std::array& sv);\n"
" template\n"
" void f(const char* const (&StrArr)[N]);\n"
"};\n"
"template\n"
"void S::f(const std::array& sv) {\n"
" const char* ptrs[N]{};\n"
" return f(ptrs);\n"
"}\n"
"template void S::f(const std::array& sv);\n");
ASSERT_EQUALS("", errout.str());
}
void qualifiedNameMember() { // #10872
const Settings s = settingsBuilder().severity(Severity::style).debugwarnings().library("std.cfg").build();
checkConst("struct data {};\n"
" struct S {\n"
" std::vector std;\n"
" void f();\n"
"};\n"
"void S::f() {\n"
" std::vector::const_iterator end = std.end();\n"
"}\n", &s);
ASSERT_EQUALS("[test.cpp:6] -> [test.cpp:4]: (style, inconclusive) Technically the member function 'S::f' can be const.\n", errout.str());
}
#define checkInitializerListOrder(code) checkInitializerListOrder_(code, __FILE__, __LINE__)
void checkInitializerListOrder_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
// Check..
settings0.certainty.setEnabled(Certainty::inconclusive, true);
Preprocessor preprocessor(settings0);
// Tokenize..
Tokenizer tokenizer(&settings0, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
CheckClass checkClass(&tokenizer, &settings0, this);
checkClass.initializerListOrder();
}
void initializerListOrder() {
checkInitializerListOrder("class Fred {\n"
" int a, b, c;\n"
"public:\n"
" Fred() : c(0), b(0), a(0) { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::b' is in the wrong place in the initializer list.\n"
"[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::a' is in the wrong place in the initializer list.\n", errout.str());
checkInitializerListOrder("class Fred {\n"
" int a, b, c;\n"
"public:\n"
" Fred() : c{0}, b{0}, a{0} { }\n"
"};");
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::b' is in the wrong place in the initializer list.\n"
"[test.cpp:4] -> [test.cpp:2]: (style, inconclusive) Member variable 'Fred::a' is in the wrong place in the initializer list.\n", errout.str());
}
#define checkInitializationListUsage(code) checkInitializationListUsage_(code, __FILE__, __LINE__)
void checkInitializationListUsage_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
// Check..
const Settings settings = settingsBuilder().severity(Severity::performance).build();
Preprocessor preprocessor(settings);
// Tokenize..
Tokenizer tokenizer(&settings, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.initializationListUsage();
}
void initializerListUsage() {
checkInitializationListUsage("enum Enum { C = 0 };\n"
"class Fred {\n"
" int a;\n" // No message for builtin types: No performance gain
" int* b;\n" // No message for pointers: No performance gain
" Enum c;\n" // No message for enums: No performance gain
" Fred() { a = 0; b = 0; c = C; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::string s;\n"
" Fred() { a = 0; s = \"foo\"; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 's' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::string& s;\n" // Message is invalid for references, since their initialization in initializer list is required anyway and behaves different from assignment (#5004)
" Fred(const std::string& s_) : s(s_) { s = \"foo\"; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::vector v;\n"
" Fred() { v = unknown; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 'v' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class C { std::string s; };\n"
"class Fred {\n"
" C c;\n"
" Fred() { c = unknown; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C c;\n"
" Fred() { c = unknown; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C c;\n"
" Fred(Fred const & other) { c = other.c; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C c;\n"
" Fred(Fred && other) { c = other.c; }\n"
"};");
ASSERT_EQUALS("[test.cpp:4]: (performance) Variable 'c' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C a;\n"
" Fred() { initB(); a = b; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C a;\n"
" Fred() : a(0) { if(b) a = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C a[5];\n"
" Fred() { for(int i = 0; i < 5; i++) a[i] = 0; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C a; int b;\n"
" Fred() : b(5) { a = b; }\n" // Don't issue a message here: You actually could move it to the initialization list, but it would cause problems if you change the order of the variable declarations.
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class C;\n"
"class Fred {\n"
" C a;\n"
" Fred() { try { a = new int; } catch(...) {} }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::string s;\n"
" Fred() { s = toString((size_t)this); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::string a;\n"
" std::string foo();\n"
" Fred() { a = foo(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n"
" std::string a;\n"
" Fred() { a = foo(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (performance) Variable 'a' is assigned in constructor body. Consider performing initialization in initialization list.\n", errout.str());
checkInitializationListUsage("class Fred {\n" // #4332
" static std::string s;\n"
" Fred() { s = \"foo\"; }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n" // #5640
" std::string s;\n"
" Fred() {\n"
" char str[2];\n"
" str[0] = c;\n"
" str[1] = 0;\n"
" s = str;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class B {\n" // #5640
" std::shared_ptr _d;\n"
" B(const B& other) : _d(std::make_shared()) {\n"
" *_d = *other._d;\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Bar {\n" // #8466
"public:\n"
" explicit Bar(const Bar &bar) : Bar{bar.s} {}\n"
" explicit Bar(const char s) : s{s} {}\n"
"private:\n"
" char s;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("unsigned bar(std::string);\n" // #8291
"class Foo {\n"
"public:\n"
" int a_, b_;\n"
" Foo(int a, int b) : a_(a), b_(b) {}\n"
" Foo(int a, const std::string& b) : Foo(a, bar(b)) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class Fred {\n" // #8111
" std::string a;\n"
" Fred() {\n"
" std::ostringstream ostr;\n"
" ostr << x;\n"
" a = ostr.str();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
// bailout: multi line lambda in rhs => do not warn
checkInitializationListUsage("class Fred {\n"
" std::function f;\n"
" Fred() {\n"
" f = [](){\n"
" return 1;\n"
" };\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
// don't warn if some other instance's members are assigned to
checkInitializationListUsage("class C {\n"
"public:\n"
" C(C& c) : m_i(c.m_i) { c.m_i = (Foo)-1; }\n"
"private:\n"
" Foo m_i;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkInitializationListUsage("class A {\n" // #9821 - delegate constructor
"public:\n"
" A() : st{} {}\n"
"\n"
" explicit A(const std::string &input): A() {\n"
" st = input;\n"
" }\n"
"\n"
"private:\n"
" std::string st;\n"
"};");
ASSERT_EQUALS("", errout.str());
}
#define checkSelfInitialization(code) checkSelfInitialization_(code, __FILE__, __LINE__)
void checkSelfInitialization_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
Preprocessor preprocessor(settings0);
// Tokenize..
Tokenizer tokenizer(&settings0, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
CheckClass checkClass(&tokenizer, &settings0, this);
(checkClass.checkSelfInitialization)();
}
void selfInitialization() {
checkSelfInitialization("class Fred {\n"
" int i;\n"
" Fred() : i(i) {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
checkSelfInitialization("class Fred {\n"
" int i;\n"
" Fred() : i{i} {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
checkSelfInitialization("class Fred {\n"
" int i;\n"
" Fred();\n"
"};\n"
"Fred::Fred() : i(i) {\n"
"}");
ASSERT_EQUALS("[test.cpp:5]: (error) Member variable 'i' is initialized by itself.\n", errout.str());
checkSelfInitialization("class A {\n" // #10427
"public:\n"
" explicit A(int x) : _x(static_cast(_x)) {}\n"
"private:\n"
" int _x;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable '_x' is initialized by itself.\n", errout.str());
checkSelfInitialization("class A {\n"
"public:\n"
" explicit A(int x) : _x((int)(_x)) {}\n"
"private:\n"
" int _x;\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable '_x' is initialized by itself.\n", errout.str());
checkSelfInitialization("class Fred {\n"
" std::string s;\n"
" Fred() : s(s) {\n"
" }\n"
"};");
ASSERT_EQUALS("[test.cpp:3]: (error) Member variable 's' is initialized by itself.\n", errout.str());
checkSelfInitialization("class Fred {\n"
" int x;\n"
" Fred(int x);\n"
"};\n"
"Fred::Fred(int x) : x(x) { }");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("class Fred {\n"
" int x;\n"
" Fred(int x);\n"
"};\n"
"Fred::Fred(int x) : x{x} { }");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("class Fred {\n"
" std::string s;\n"
" Fred(const std::string& s) : s(s) {\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("class Fred {\n"
" std::string s;\n"
" Fred(const std::string& s) : s{s} {\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("struct Foo : Bar {\n"
" int i;\n"
" Foo(int i)\n"
" : Bar(\"\"), i(i) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("struct Foo : std::Bar {\n" // #6073
" int i;\n"
" Foo(int i)\n"
" : std::Bar(\"\"), i(i) {}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkSelfInitialization("struct Foo : std::Bar {\n" // #6073
" int i;\n"
" Foo(int i)\n"
" : std::Bar(\"\"), i{i} {}\n"
"};");
ASSERT_EQUALS("", errout.str());
}
#define checkVirtualFunctionCall(...) checkVirtualFunctionCall_(__FILE__, __LINE__, __VA_ARGS__)
void checkVirtualFunctionCall_(const char* file, int line, const char code[], bool inconclusive = true) {
// Clear the error log
errout.str("");
// Check..
const Settings settings = settingsBuilder().severity(Severity::warning).certainty(Certainty::inconclusive, inconclusive).build();
Preprocessor preprocessor(settings);
// Tokenize..
Tokenizer tokenizer(&settings, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
CheckClass checkClass(&tokenizer, &settings, this);
checkClass.checkVirtualFunctionCallInConstructor();
}
void virtualFunctionCallInConstructor() {
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual int f() { return 1; }\n"
" A();\n"
"};\n"
"A::A()\n"
"{f();}");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (style) Virtual function 'f' is called from constructor 'A()' at line 7. Dynamic binding is not used.\n", errout.str());
checkVirtualFunctionCall("class A {\n"
" virtual int f();\n"
" A() {f();}\n"
"};\n"
"int A::f() { return 1; }");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:2]: (style) Virtual function 'f' is called from constructor 'A()' at line 3. Dynamic binding is not used.\n", errout.str());
checkVirtualFunctionCall("class A : B {\n"
" int f() override;\n"
" A() {f();}\n"
"};\n"
"int A::f() { return 1; }");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:2]: (style) Virtual function 'f' is called from constructor 'A()' at line 3. Dynamic binding is not used.\n", errout.str());
checkVirtualFunctionCall("class B {\n"
" virtual int f() = 0;\n"
"};\n"
"class A : B {\n"
" int f();\n" // <- not explicitly virtual
" A() {f();}\n"
"};\n"
"int A::f() { return 1; }");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A\n"
"{\n"
" A() { A::f(); }\n"
" virtual void f() {}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A : B {\n"
" int f() final { return 1; }\n"
" A() { f(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class B {\n"
"public:"
" virtual void f() {}\n"
"};\n"
"class A : B {\n"
"public:"
" void f() override final {}\n"
" A() { f(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class Base {\n"
"public:\n"
" virtual void Copy(const Base& Src) = 0;\n"
"};\n"
"class Derived : public Base {\n"
"public:\n"
" Derived() : i(0) {}\n"
" Derived(const Derived& Src);\n"
" void Copy(const Base& Src) override;\n"
" int i;\n"
"};\n"
"Derived::Derived(const Derived& Src) {\n"
" Copy(Src);\n"
"}\n"
"void Derived::Copy(const Base& Src) {\n"
" auto d = dynamic_cast(Src);\n"
" i = d.i;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:13] -> [test.cpp:9]: (style) Virtual function 'Copy' is called from copy constructor 'Derived(const Derived&Src)' at line 13. Dynamic binding is not used.\n",
errout.str());
checkVirtualFunctionCall("struct B {\n"
" B() { auto pf = &f; }\n"
" virtual void f() {}\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("struct B {\n"
" B() { auto pf = &B::f; }\n"
" virtual void f() {}\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("struct B {\n"
" B() { (f)(); }\n"
" virtual void f() {}\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:3]: (style) Virtual function 'f' is called from constructor 'B()' at line 2. Dynamic binding is not used.\n", errout.str());
checkVirtualFunctionCall("class S {\n" // don't crash
" ~S();\n"
"public:\n"
" S();\n"
"};\n"
"S::S() {\n"
" typeid(S);\n"
"}\n"
"S::~S() = default;\n");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("struct Base: { virtual void wibble() = 0; virtual ~Base() {} };\n" // #11167
"struct D final : public Base {\n"
" void wibble() override;\n"
" D() {}\n"
" virtual ~D() { wibble(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void pureVirtualFunctionCall() {
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pure()=0;\n"
" A();\n"
"};\n"
"A::A()\n"
"{pure();}");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual int pure()=0;\n"
" A();\n"
" int m;\n"
"};\n"
"A::A():m(A::pure())\n"
"{}");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
checkVirtualFunctionCall("namespace N {\n"
" class A\n"
" {\n"
" virtual int pure() = 0;\n"
" A();\n"
" int m;\n"
" };\n"
"}\n"
"N::A::A() : m(N::A::pure()) {}\n");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:4]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" virtual ~A();\n"
" int m;\n"
"};\n"
"A::~A()\n"
"{pure();}");
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" void nonpure()\n"
" {pure();}\n"
" A();\n"
"};\n"
"A::A()\n"
"{nonpure();}");
ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual int pure()=0;\n"
" int nonpure()\n"
" {return pure();}\n"
" A();\n"
" int m;\n"
"};\n"
"A::A():m(nonpure())\n"
"{}");
TODO_ASSERT_EQUALS("[test.cpp:9] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", "", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" void nonpure()\n"
" {pure();}\n"
" virtual ~A();\n"
" int m;\n"
"};\n"
"A::~A()\n"
"{nonpure();}");
ASSERT_EQUALS("[test.cpp:10] -> [test.cpp:5] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pure()=0;\n"
" A(bool b);\n"
"};\n"
"A::A(bool b)\n"
"{if (b) pure();}");
ASSERT_EQUALS("[test.cpp:7] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in constructor.\n", errout.str());
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pure()=0;\n"
" virtual ~A();\n"
" int m;\n"
"};\n"
"A::~A()\n"
"{if (b) pure();}");
ASSERT_EQUALS("[test.cpp:8] -> [test.cpp:3]: (warning) Call of pure virtual function 'pure' in destructor.\n", errout.str());
// #5831
checkVirtualFunctionCall("class abc {\n"
"public:\n"
" virtual ~abc() throw() {}\n"
" virtual void def(void* g) throw () = 0;\n"
"};");
ASSERT_EQUALS("", errout.str());
// #4992
checkVirtualFunctionCall("class CMyClass {\n"
" std::function< void(void) > m_callback;\n"
"public:\n"
" CMyClass() {\n"
" m_callback = [this]() { return VirtualMethod(); };\n"
" }\n"
" virtual void VirtualMethod() = 0;\n"
"};");
ASSERT_EQUALS("", errout.str());
// #10559
checkVirtualFunctionCall("struct S {\n"
" S(const int x) : m(std::bind(&S::f, this, x, 42)) {}\n"
" virtual int f(const int x, const int y) = 0;\n"
" std::function m;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void pureVirtualFunctionCallOtherClass() {
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pure()=0;\n"
" A(const A & a);\n"
"};\n"
"A::A(const A & a)\n"
"{a.pure();}");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pure()=0;\n"
" A();\n"
"};\n"
"class B\n"
"{\n"
" virtual void pure()=0;\n"
"};\n"
"A::A()\n"
"{B b; b.pure();}");
ASSERT_EQUALS("", errout.str());
}
void pureVirtualFunctionCallWithBody() {
checkVirtualFunctionCall("class A\n"
"{\n"
" virtual void pureWithBody()=0;\n"
" A();\n"
"};\n"
"A::A()\n"
"{pureWithBody();}\n"
"void A::pureWithBody()\n"
"{}");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pureWithBody()=0;\n"
" void nonpure()\n"
" {pureWithBody();}\n"
" A();\n"
"};\n"
"A::A()\n"
"{nonpure();}\n"
"void A::pureWithBody()\n"
"{}");
ASSERT_EQUALS("", errout.str());
}
void pureVirtualFunctionCallPrevented() {
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" void nonpure(bool bCallPure)\n"
" { if (bCallPure) pure();}\n"
" A();\n"
"};\n"
"A::A()\n"
"{nonpure(false);}");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" void nonpure(bool bCallPure)\n"
" { if (!bCallPure) ; else pure();}\n"
" A();\n"
"};\n"
"A::A()\n"
"{nonpure(false);}");
ASSERT_EQUALS("", errout.str());
checkVirtualFunctionCall("class A\n"
" {\n"
" virtual void pure()=0;\n"
" void nonpure(bool bCallPure)\n"
" {\n"
" switch (bCallPure) {\n"
" case true: pure(); break;\n"
" }\n"
" }\n"
" A();\n"
"};\n"
"A::A()\n"
"{nonpure(false);}");
ASSERT_EQUALS("", errout.str());
}
#define checkOverride(code) checkOverride_(code, __FILE__, __LINE__)
void checkOverride_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
const Settings settings = settingsBuilder().severity(Severity::style).build();
Preprocessor preprocessor(settings);
// Tokenize..
Tokenizer tokenizer(&settings, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
(checkClass.checkOverride)();
}
void override1() {
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { virtual void f(); };");
ASSERT_EQUALS("[test.cpp:1] -> [test.cpp:2]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { virtual void f() override; };");
ASSERT_EQUALS("", errout.str());
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { virtual void f() final; };");
ASSERT_EQUALS("", errout.str());
checkOverride("class Base {\n"
"public:\n"
" virtual auto foo( ) const -> size_t { return 1; }\n"
" virtual auto bar( ) const -> size_t { return 1; }\n"
"};\n"
"class Derived : public Base {\n"
"public :\n"
" auto foo( ) const -> size_t { return 0; }\n"
" auto bar( ) const -> size_t override { return 0; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:8]: (style) The function 'foo' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("namespace Test {\n"
" class C {\n"
" public:\n"
" virtual ~C();\n"
" };\n"
"}\n"
"class C : Test::C {\n"
"public:\n"
" ~C();\n"
"};");
ASSERT_EQUALS("[test.cpp:4] -> [test.cpp:9]: (style) The destructor '~C' overrides a destructor in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("struct Base {\n"
" virtual void foo();\n"
"};\n"
"\n"
"struct Derived: public Base {\n"
" void foo() override;\n"
" void foo(int);\n"
"};");
ASSERT_EQUALS("", errout.str());
checkOverride("struct B {\n" // #9092
" virtual int f(int i) const = 0;\n"
"};\n"
"namespace N {\n"
" struct D : B {\n"
" virtual int f(int i) const;\n"
" };\n"
"}\n");
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:6]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("struct A {\n"
" virtual void f(int);\n"
"};\n"
"struct D : A {\n"
" void f(double);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct A {\n"
" virtual void f(int);\n"
"};\n"
"struct D : A {\n"
" void f(int);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:5]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("struct A {\n"
" virtual void f(char, int);\n"
"};\n"
"struct D : A {\n"
" void f(char, int);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:5]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("struct A {\n"
" virtual void f(char, int);\n"
"};\n"
"struct D : A {\n"
" void f(char, double);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct A {\n"
" virtual void f(char, int);\n"
"};\n"
"struct D : A {\n"
" void f(char c = '\\0', double);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct A {\n"
" virtual void f(char, int);\n"
"};\n"
"struct D : A {\n"
" void f(char c = '\\0', int);\n"
"};\n");
ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:5]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", errout.str());
checkOverride("struct A {\n"
" virtual void f(char c, std::vector);\n"
"};\n"
"struct D : A {\n"
" void f(char c, std::vector);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct A {\n"
" virtual void f(char c, std::vector);\n"
"};\n"
"struct D : A {\n"
" void f(char c, std::set);\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct A {\n"
" virtual void f(char c, std::vector v);\n"
"};\n"
"struct D : A {\n"
" void f(char c, std::vector w = {});\n"
"};\n");
TODO_ASSERT_EQUALS("[test.cpp:2] -> [test.cpp:5]: (style) The function 'f' overrides a function in a base class but is not marked with a 'override' specifier.\n", "", errout.str());
checkOverride("struct T {};\n" // #10920
"struct B {\n"
" virtual T f() = 0;\n"
"};\n"
"struct D : B {\n"
" friend T f();\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkOverride("struct S {};\n" // #11827
"struct SPtr {\n"
" virtual S* operator->() const { return p; }\n"
" S* p = nullptr;\n"
"};\n"
"struct T : public S {};\n"
"struct TPtr : public SPtr {\n"
" T* operator->() const { return (T*)p; }\n"
"};\n");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:8]: (style) The function 'operator->' overrides a function in a base class but is not marked with a 'override' specifier.\n",
errout.str());
}
void overrideCVRefQualifiers() {
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { void f() const; }");
ASSERT_EQUALS("", errout.str());
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { void f() volatile; }");
ASSERT_EQUALS("", errout.str());
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { void f() &; }");
ASSERT_EQUALS("", errout.str());
checkOverride("class Base { virtual void f(); };\n"
"class Derived : Base { void f() &&; }");
ASSERT_EQUALS("", errout.str());
}
#define checkUselessOverride(code) checkUselessOverride_(code, __FILE__, __LINE__)
void checkUselessOverride_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
const Settings settings = settingsBuilder().severity(Severity::style).build();
// Raw tokens..
std::vector files(1, "test.cpp");
std::istringstream istr(code);
const simplecpp::TokenList tokens1(istr, files, files[0]);
// Preprocess..
simplecpp::TokenList tokens2(files);
std::map filedata;
simplecpp::preprocess(tokens2, tokens1, files, filedata, simplecpp::DUI());
// Tokenize..
Tokenizer tokenizer(&settings, this);
tokenizer.createTokens(std::move(tokens2));
ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
(checkClass.checkUselessOverride)();
}
void uselessOverride() {
checkUselessOverride("struct B { virtual int f() { return 5; } };\n" // #11757
"struct D : B {\n"
" int f() override { return B::f(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:1] -> [test.cpp:3]: (style) The function 'f' overrides a function in a base class but just delegates back to the base class.\n", errout.str());
checkUselessOverride("struct B { virtual void f(); };\n"
"struct D : B {\n"
" void f() override { B::f(); }\n"
"};");
ASSERT_EQUALS("[test.cpp:1] -> [test.cpp:3]: (style) The function 'f' overrides a function in a base class but just delegates back to the base class.\n", errout.str());
checkUselessOverride("struct B { virtual int f() = 0; };\n"
"int B::f() { return 5; }\n"
"struct D : B {\n"
" int f() override { return B::f(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B { virtual int f(int i); };\n"
"struct D : B {\n"
" int f(int i) override { return B::f(i); }\n"
"};");
ASSERT_EQUALS("[test.cpp:1] -> [test.cpp:3]: (style) The function 'f' overrides a function in a base class but just delegates back to the base class.\n", errout.str());
checkUselessOverride("struct B { virtual int f(int i); };\n"
"struct D : B {\n"
" int f(int i) override { return B::f(i + 1); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B { virtual int f(int i, int j); };\n"
"struct D : B {\n"
" int f(int i, int j) override { return B::f(j, i); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B { virtual int f(); };\n"
"struct I { virtual int f() = 0; };\n"
"struct D : B, I {\n"
" int f() override { return B::f(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct S { virtual void f(); };\n"
"struct D : S {\n"
" void f() final { S::f(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct S {\n"
"protected:\n"
" virtual void f();\n"
"};\n"
"struct D : S {\n"
"public:\n"
" void f() override { S::f(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B { virtual void f(int, int, int) const; };\n" // #11799
"struct D : B {\n"
" int m = 42;\n"
" void f(int a, int b, int c) const override;\n"
"};\n"
"void D::f(int a, int b, int c) const {\n"
" B::f(a, b, m);\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B {\n" // #11803
" virtual void f();\n"
" virtual void f(int i);\n"
"};\n"
"struct D : B {\n"
" void f() override { B::f(); }\n"
" void f(int i) override;\n"
" void g() { f(); }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B { virtual void f(); };\n" // #11808
"struct D : B { void f() override {} };\n"
"struct D2 : D {\n"
" void f() override {\n"
" B::f();\n"
" }\n"
"};");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B {\n"
" virtual int f() { return 1; }\n"
" virtual int g() { return 7; }\n"
" virtual int h(int i, int j) { return i + j; }\n"
" virtual int j(int i, int j) { return i + j; }\n"
"};\n"
"struct D : B {\n"
" int f() override { return 2; }\n"
" int g() override { return 7; }\n"
" int h(int j, int i) override { return i + j; }\n"
" int j(int i, int j) override { return i + j; }\n"
"};");
ASSERT_EQUALS("[test.cpp:3] -> [test.cpp:9]: (style) The function 'g' overrides a function in a base class but is identical to the overridden function\n"
"[test.cpp:5] -> [test.cpp:11]: (style) The function 'j' overrides a function in a base class but is identical to the overridden function\n",
errout.str());
checkUselessOverride("struct B : std::exception {\n"
" virtual void f() { throw *this; }\n"
"};\n"
"struct D : B {\n"
" void f() override { throw *this; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("#define MACRO virtual void f() {}\n"
"struct B {\n"
" MACRO\n"
"};\n"
"struct D : B {\n"
" MACRO\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B {\n"
" B() = default;\n"
" explicit B(int i) : m(i) {}\n"
" int m{};\n"
" virtual int f() const { return m; }\n"
"};\n"
"struct D : B {\n"
" explicit D(int i) : m(i) {}\n"
" int m{};\n"
" int f() const override { return m; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("struct B {\n"
" int g() const;\n"
" virtual int f() const { return g(); }\n"
"};\n"
"struct D : B {\n"
" int g() const;\n"
" int f() const override { return g(); }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
checkUselessOverride("#define MACRO 1\n"
"struct B { virtual int f() { return 1; } };\n"
"struct D : B {\n"
" int f() override { return MACRO; }\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
#define checkUnsafeClassRefMember(code) checkUnsafeClassRefMember_(code, __FILE__, __LINE__)
void checkUnsafeClassRefMember_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
Settings settings = settingsBuilder().severity(Severity::warning).build();
settings.safeChecks.classes = true;
Preprocessor preprocessor(settings);
// Tokenize..
Tokenizer tokenizer(&settings, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings, this);
(checkClass.checkUnsafeClassRefMember)();
}
void unsafeClassRefMember() {
checkUnsafeClassRefMember("class C { C(const std::string &s) : s(s) {} const std::string &s; };");
ASSERT_EQUALS("[test.cpp:1]: (warning) Unsafe class: The const reference member 'C::s' is initialized by a const reference constructor argument. You need to be careful about lifetime issues.\n", errout.str());
}
#define checkThisUseAfterFree(code) checkThisUseAfterFree_(code, __FILE__, __LINE__)
void checkThisUseAfterFree_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
Preprocessor preprocessor(settings1);
// Tokenize..
Tokenizer tokenizer(&settings1, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings1, this);
(checkClass.checkThisUseAfterFree)();
}
void thisUseAfterFree() {
setMultiline();
// Calling method..
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { delete mInstance; hello(); }\n"
"private:\n"
" static C *mInstance;\n"
" void hello() {}\n"
"};");
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
"test.cpp:3:note:Delete 'mInstance', invalidating 'this'\n"
"test.cpp:3:note:Call method when 'this' is invalid\n",
errout.str());
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { mInstance.reset(); hello(); }\n"
"private:\n"
" static std::shared_ptr mInstance;\n"
" void hello() {}\n"
"};");
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
"test.cpp:3:note:Delete 'mInstance', invalidating 'this'\n"
"test.cpp:3:note:Call method when 'this' is invalid\n",
errout.str());
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { reset(); hello(); }\n"
"private:\n"
" static std::shared_ptr mInstance;\n"
" void hello();\n"
" void reset() { mInstance.reset(); }\n"
"};");
ASSERT_EQUALS("test.cpp:3:warning:Calling method 'hello()' when 'this' might be invalid\n"
"test.cpp:5:note:Assuming 'mInstance' is used as 'this'\n"
"test.cpp:7:note:Delete 'mInstance', invalidating 'this'\n"
"test.cpp:3:note:Call method when 'this' is invalid\n",
errout.str());
// Use member..
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { delete self; x = 123; }\n"
"private:\n"
" static C *self;\n"
" int x;\n"
"};");
ASSERT_EQUALS("test.cpp:3:warning:Using member 'x' when 'this' might be invalid\n"
"test.cpp:5:note:Assuming 'self' is used as 'this'\n"
"test.cpp:3:note:Delete 'self', invalidating 'this'\n"
"test.cpp:3:note:Call method when 'this' is invalid\n",
errout.str());
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { delete self; x[1] = 123; }\n"
"private:\n"
" static C *self;\n"
" std::map x;\n"
"};");
ASSERT_EQUALS("test.cpp:3:warning:Using member 'x' when 'this' might be invalid\n"
"test.cpp:5:note:Assuming 'self' is used as 'this'\n"
"test.cpp:3:note:Delete 'self', invalidating 'this'\n"
"test.cpp:3:note:Call method when 'this' is invalid\n",
errout.str());
// Assign 'shared_from_this()' to non-static smart pointer
checkThisUseAfterFree("class C {\n"
"public:\n"
" void hold() { mInstance = shared_from_this(); }\n"
" void dostuff() { mInstance.reset(); hello(); }\n"
"private:\n"
" std::shared_ptr mInstance;\n"
" void hello() {}\n"
"};");
ASSERT_EQUALS("test.cpp:4:warning:Calling method 'hello()' when 'this' might be invalid\n"
"test.cpp:6:note:Assuming 'mInstance' is used as 'this'\n"
"test.cpp:4:note:Delete 'mInstance', invalidating 'this'\n"
"test.cpp:4:note:Call method when 'this' is invalid\n",
errout.str());
// Avoid FP..
checkThisUseAfterFree("class C {\n"
"public:\n"
" void dostuff() { delete self; x = 123; }\n"
"private:\n"
" C *self;\n"
" int x;\n"
"};");
ASSERT_EQUALS("", errout.str());
checkThisUseAfterFree("class C {\n"
"public:\n"
" void hold() { mInstance = shared_from_this(); }\n"
" void dostuff() { if (x) { mInstance.reset(); return; } hello(); }\n"
"private:\n"
" std::shared_ptr mInstance;\n"
" void hello() {}\n"
"};");
ASSERT_EQUALS("", errout.str());
checkThisUseAfterFree("class C\n"
"{\n"
"public:\n"
" explicit C(const QString& path) : mPath( path ) {}\n"
"\n"
" static void initialize(const QString& path) {\n" // <- avoid fp in static method
" if (instanceSingleton)\n"
" delete instanceSingleton;\n"
" instanceSingleton = new C(path);\n"
" }\n"
"private:\n"
" static C* instanceSingleton;\n"
"};\n"
"\n"
"C* C::instanceSingleton;");
ASSERT_EQUALS("", errout.str());
// Avoid false positive when pointer is deleted in lambda
checkThisUseAfterFree("class C {\n"
"public:\n"
" void foo();\n"
" void set() { p = this; }\n"
" void dostuff() {}\n"
" C* p;\n"
"};\n"
"\n"
"void C::foo() {\n"
" auto done = [this] () { delete p; };\n"
" dostuff();\n"
" done();\n"
"}");
ASSERT_EQUALS("", errout.str());
}
void ctu(const std::vector &code) {
const Settings settings;
auto &check = getCheck();
// getFileInfo
std::list fileInfo;
for (const std::string& c: code) {
Tokenizer tokenizer(&settings, this);
std::istringstream istr(c);
ASSERT(tokenizer.tokenize(istr, (std::to_string(fileInfo.size()) + ".cpp").c_str()));
fileInfo.push_back(check.getFileInfo(&tokenizer, &settings));
}
// Check code..
errout.str("");
check.analyseWholeProgram(nullptr, fileInfo, settings, *this);
while (!fileInfo.empty()) {
delete fileInfo.back();
fileInfo.pop_back();
}
}
void ctuOneDefinitionRule() {
ctu({"class C { C() { std::cout << 0; } };", "class C { C() { std::cout << 1; } };"});
ASSERT_EQUALS("[1.cpp:1] -> [0.cpp:1]: (error) The one definition rule is violated, different classes/structs have the same name 'C'\n", errout.str());
ctu({"class C { C(); }; C::C() { std::cout << 0; }", "class C { C(); }; C::C() { std::cout << 1; }"});
ASSERT_EQUALS("[1.cpp:1] -> [0.cpp:1]: (error) The one definition rule is violated, different classes/structs have the same name 'C'\n", errout.str());
ctu({"class C { C() {} };\n", "class C { C() {} };\n"});
ASSERT_EQUALS("", errout.str());
ctu({"class C { C(); }; C::C(){}", "class C { C(); }; C::C(){}"});
ASSERT_EQUALS("", errout.str());
ctu({"class A::C { C() { std::cout << 0; } };", "class B::C { C() { std::cout << 1; } };"});
ASSERT_EQUALS("", errout.str());
// 11435 - template specialisations
const std::string header = "template struct Test {};\n";
ctu({header + "template struct Test {};\n",
header + "template struct Test {};\n"});
ASSERT_EQUALS("", errout.str());
}
#define getFileInfo(code) getFileInfo_(code, __FILE__, __LINE__)
void getFileInfo_(const char code[], const char* file, int line) {
// Clear the error log
errout.str("");
Preprocessor preprocessor(settings1);
// Tokenize..
Tokenizer tokenizer(&settings1, this, &preprocessor);
std::istringstream istr(code);
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
// Check..
CheckClass checkClass(&tokenizer, &settings1, this);
Check::FileInfo * fileInfo = (checkClass.getFileInfo)(&tokenizer, &settings1);
delete fileInfo;
}
void testGetFileInfo() {
getFileInfo("void foo() { union { struct { }; }; }"); // don't crash
getFileInfo("struct sometype { sometype(); }; sometype::sometype() = delete;"); // don't crash
}
};
REGISTER_TEST(TestClass)