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Fix #9282 FP Unused private function (#4327)

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chrchr-github 2022-08-07 20:06:32 +02:00 committed by GitHub
parent 156323c95e
commit 974e34490f
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 52 additions and 17 deletions
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25
lib/tokenize.cpp
View File

@ -1712,8 +1712,11 @@ void Tokenizer::simplifyTypedef()
tok2 = tok2->linkAt(1);
// skip over const/noexcept
while (Token::Match(tok2->next(), "const|noexcept"))
while (Token::Match(tok2->next(), "const|noexcept")) {
tok2 = tok2->next();
if (Token::Match(tok2->next(), "( true|false )"))
tok2 = tok2->tokAt(3);
}
tok2->insertToken(")");
tok2 = tok2->next();
@ -6431,11 +6434,15 @@ void Tokenizer::simplifyVarDecl(Token * tokBegin, const Token * const tokEnd, co
tok2 = nullptr;
}
// parenthesis, functions can't be declared like:
// int f1(a,b), f2(c,d);
// so if there is a comma assume this is a variable declaration
else if (Token::Match(varName, "%name% (") && Token::simpleMatch(varName->linkAt(1), ") ,")) {
tok2 = varName->linkAt(1)->next();
// function declaration
else if (Token::Match(varName, "%name% (")) {
Token* commaTok = varName->linkAt(1)->next();
while (Token::Match(commaTok, "const|noexcept|override|final")) {
commaTok = commaTok->next();
if (Token::Match(commaTok, "( true|false )"))
commaTok = commaTok->link()->next();
}
tok2 = Token::simpleMatch(commaTok, ",") ? commaTok : nullptr;
}
else
@ -8424,10 +8431,12 @@ void Tokenizer::simplifyKeyword()
// noexcept -> noexcept(true)
// 2) void f() noexcept; -> void f() noexcept(true);
else if (Token::Match(tok, ") noexcept :|{|;|const|override|final")) {
else if (Token::Match(tok, ") const|override|final| noexcept :|{|;|,|const|override|final")) {
// Insertion is done in inverse order
// The brackets are linked together accordingly afterwards
Token * tokNoExcept = tok->next();
Token* tokNoExcept = tok->next();
while (tokNoExcept->str() != "noexcept")
tokNoExcept = tokNoExcept->next();
tokNoExcept->insertToken(")");
Token * braceEnd = tokNoExcept->next();
tokNoExcept->insertToken("true");

10
test/testsimplifytypedef.cpp
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@ -2622,7 +2622,7 @@ private:
" constexpr const foo &c_str() const noexcept { return _a; }\n"
"};";
const char exp[] = "class c { char _a [ 4 ] ; const constexpr char ( & c_str ( ) const noexcept ) [ 4 ] { return _a ; } } ;";
const char exp[] = "class c { char _a [ 4 ] ; const constexpr char ( & c_str ( ) const noexcept ( true ) ) [ 4 ] { return _a ; } } ;";
ASSERT_EQUALS(exp, tok(code, false));
}
@ -2633,8 +2633,8 @@ private:
" constexpr operator foo &() const noexcept { return _a; }\n"
"};";
const char actual[] = "class c { char _a [ 4 ] ; constexpr operatorchar ( & ( ) const noexcept ) [ 4 ] { return _a ; } } ;";
const char exp[] = "class c { char _a [ 4 ] ; const operator char ( & ( ) const noexcept ) [ 4 ] { return _a ; } } ;";
const char actual[] = "class c { char _a [ 4 ] ; constexpr operatorchar ( & ( ) const noexcept ( true ) ) [ 4 ] { return _a ; } } ;";
const char exp[] = "class c { char _a [ 4 ] ; const operator char ( & ( ) const noexcept ( true ) ) [ 4 ] { return _a ; } } ;";
TODO_ASSERT_EQUALS(exp, actual, tok(code, false));
}
@ -2645,8 +2645,8 @@ private:
" constexpr operator const foo &() const noexcept { return _a; }\n"
"};";
const char actual[] = "class c { char _a [ 4 ] ; constexpr operatorconstchar ( & ( ) const noexcept ) [ 4 ] { return _a ; } } ;";
const char exp[] = "class c { char _a [ 4 ] ; const operator const char ( & ( ) const noexcept ) [ 4 ] { return _a ; } } ;";
const char actual[] = "class c { char _a [ 4 ] ; constexpr operatorconstchar ( & ( ) const noexcept ( true ) ) [ 4 ] { return _a ; } } ;";
const char exp[] = "class c { char _a [ 4 ] ; const operator const char ( & ( ) const noexcept ( true ) ) [ 4 ] { return _a ; } } ;";
TODO_ASSERT_EQUALS(exp, actual, tok(code, false));
}
}

6
test/testsymboldatabase.cpp
View File

@ -4370,7 +4370,7 @@ private:
"struct Foo : Bar {\n"
" virtual std::string get_endpoint_url() const noexcept override final;\n"
"};");
const Token *f = db ? Token::findsimplematch(tokenizer.tokens(), "get_endpoint_url ( ) const noexcept ;") : nullptr;
const Token *f = db ? Token::findsimplematch(tokenizer.tokens(), "get_endpoint_url ( ) const noexcept ( true ) ;") : nullptr;
ASSERT(f != nullptr);
ASSERT(f && f->function() && f->function()->token->linenr() == 2);
ASSERT(f && f->function() && f->function()->hasVirtualSpecifier());
@ -4378,7 +4378,7 @@ private:
ASSERT(f && f->function() && !f->function()->hasFinalSpecifier());
ASSERT(f && f->function() && f->function()->isConst());
ASSERT(f && f->function() && f->function()->isNoExcept());
f = db ? Token::findsimplematch(tokenizer.tokens(), "get_endpoint_url ( ) const noexcept override final ;") : nullptr;
f = db ? Token::findsimplematch(tokenizer.tokens(), "get_endpoint_url ( ) const noexcept ( true ) override final ;") : nullptr;
ASSERT(f != nullptr);
ASSERT(f && f->function() && f->function()->token->linenr() == 5);
ASSERT(f && f->function() && f->function()->hasVirtualSpecifier());
@ -6731,7 +6731,7 @@ private:
" return nullptr;\n"
"}");
ASSERT_EQUALS("", errout.str());
const Token *functok = Token::findsimplematch(tokenizer.tokens(), "what ( ) const noexcept {");
const Token *functok = Token::findsimplematch(tokenizer.tokens(), "what ( ) const noexcept ( true ) {");
ASSERT(functok);
ASSERT(functok->function());
ASSERT(functok->function()->name() == "what");

17
test/testtokenize.cpp
View File

@ -217,6 +217,7 @@ private:
TEST_CASE(vardecl26); // #5907 - incorrect handling of extern declarations
TEST_CASE(vardecl27); // #7850 - crash on valid C code
TEST_CASE(vardecl28);
TEST_CASE(vardecl29); // #9282
TEST_CASE(vardecl_stl_1);
TEST_CASE(vardecl_stl_2);
TEST_CASE(vardecl_stl_3);
@ -2492,6 +2493,20 @@ private:
tokenizeAndStringify(code, /*expand=*/ true, Settings::Native, "test.c"));
}
void vardecl29() { // #9282
const char* code = "double f1() noexcept, f2(double) noexcept;";
ASSERT_EQUALS("double f1 ( ) noexcept ( true ) ; double f2 ( double ) noexcept ( true ) ;",
tokenizeAndStringify(code));
code = "class C {\n"
" double f1() const noexcept, f2 (double) const noexcept;\n"
"};\n";
ASSERT_EQUALS("class C {\n"
"double f1 ( ) const noexcept ( true ) ; double f2 ( double ) const noexcept ( true ) ;\n"
"} ;",
tokenizeAndStringify(code));
}
void volatile_variables() {
{
const char code[] = "volatile int a=0;\n"
@ -4931,7 +4946,7 @@ private:
ASSERT_EQUALS(result3, tokenizeAndStringify(code3));
const char code4[] = "value_type * operator += (int) const noexcept ;";
const char result4[] = "value_type * operator+= ( int ) const noexcept ;";
const char result4[] = "value_type * operator+= ( int ) const noexcept ( true ) ;";
ASSERT_EQUALS(result4, tokenizeAndStringify(code4));
const char code5[] = "value_type * operator += (int) const noexcept ( true ) ;";

11
test/testunusedprivfunc.cpp
View File

@ -47,6 +47,7 @@ private:
TEST_CASE(test4);
TEST_CASE(test5);
TEST_CASE(test6); // ticket #2602
TEST_CASE(test7); // ticket #9282
// [ 2236547 ] False positive --style unused function, called via pointer
TEST_CASE(func_pointer1);
@ -251,6 +252,16 @@ private:
ASSERT_EQUALS("", errout.str());
}
void test7() { // ticket #9282
check("class C {\n"
" double f1() const noexcept, f2(double) const noexcept;\n"
" void f3() const noexcept;\n"
"};\n"
"double C::f1() const noexcept { f3(); }\n"
"void C::f3() const noexcept {}\n");
ASSERT_EQUALS("", errout.str());
}