1113 lines
40 KiB
C++
1113 lines
40 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2018 Cppcheck team.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
#include "checkbool.h"
|
|
#include "settings.h"
|
|
#include "testsuite.h"
|
|
#include "tokenize.h"
|
|
|
|
|
|
class TestBool : public TestFixture {
|
|
public:
|
|
TestBool() : TestFixture("TestBool") {
|
|
}
|
|
|
|
private:
|
|
Settings settings;
|
|
|
|
void run() override {
|
|
settings.addEnabled("style");
|
|
settings.addEnabled("warning");
|
|
settings.inconclusive = true;
|
|
|
|
TEST_CASE(bitwiseOnBoolean); // if (bool & bool)
|
|
TEST_CASE(incrementBoolean);
|
|
TEST_CASE(assignBoolToPointer);
|
|
TEST_CASE(assignBoolToFloat);
|
|
|
|
TEST_CASE(comparisonOfBoolExpressionWithInt1);
|
|
TEST_CASE(comparisonOfBoolExpressionWithInt2);
|
|
TEST_CASE(comparisonOfBoolExpressionWithInt3);
|
|
TEST_CASE(comparisonOfBoolExpressionWithInt4);
|
|
|
|
TEST_CASE(comparisonOfBoolWithInt1);
|
|
TEST_CASE(comparisonOfBoolWithInt2);
|
|
TEST_CASE(comparisonOfBoolWithInt3);
|
|
TEST_CASE(comparisonOfBoolWithInt4);
|
|
TEST_CASE(comparisonOfBoolWithInt5);
|
|
TEST_CASE(comparisonOfBoolWithInt6); // #4224 - integer is casted to bool
|
|
TEST_CASE(comparisonOfBoolWithInt7); // #4846 - (!x == true)
|
|
|
|
TEST_CASE(checkComparisonOfFuncReturningBool1);
|
|
TEST_CASE(checkComparisonOfFuncReturningBool2);
|
|
TEST_CASE(checkComparisonOfFuncReturningBool3);
|
|
TEST_CASE(checkComparisonOfFuncReturningBool4);
|
|
TEST_CASE(checkComparisonOfFuncReturningBool5);
|
|
TEST_CASE(checkComparisonOfFuncReturningBool6);
|
|
TEST_CASE(checkComparisonOfBoolWithBool);
|
|
|
|
// Converting pointer addition result to bool
|
|
TEST_CASE(pointerArithBool1);
|
|
|
|
TEST_CASE(returnNonBool);
|
|
}
|
|
|
|
void check(const char code[], bool experimental = false, const char filename[] = "test.cpp") {
|
|
// Clear the error buffer..
|
|
errout.str("");
|
|
|
|
settings.experimental = experimental;
|
|
|
|
// Tokenize..
|
|
Tokenizer tokenizer(&settings, this);
|
|
std::istringstream istr(code);
|
|
tokenizer.tokenize(istr, filename);
|
|
|
|
// Check...
|
|
CheckBool checkBool(&tokenizer, &settings, this);
|
|
checkBool.runChecks(&tokenizer, &settings, this);
|
|
tokenizer.simplifyTokenList2();
|
|
checkBool.runSimplifiedChecks(&tokenizer, &settings, this);
|
|
}
|
|
|
|
|
|
void assignBoolToPointer() {
|
|
check("void foo(bool *p) {\n"
|
|
" p = false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
check("void foo(bool *p) {\n"
|
|
" p = (x<y);\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
check("void foo(bool *p) {\n"
|
|
" p = (x||y);\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
check("void foo(bool *p) {\n"
|
|
" p = (x&&y);\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
// check against potential false positives
|
|
check("void foo(bool *p) {\n"
|
|
" *p = false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ticket #5046 - false positive: Boolean value assigned to pointer
|
|
check("struct S {\n"
|
|
" bool *p;\n"
|
|
"};\n"
|
|
"void f() {\n"
|
|
" S s = {0};\n"
|
|
" *s.p = true;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct S {\n"
|
|
" bool *p;\n"
|
|
"};\n"
|
|
"void f() {\n"
|
|
" S s = {0};\n"
|
|
" s.p = true;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
// ticket #5627 - false positive: template
|
|
check("void f() {\n"
|
|
" X *p = new ::std::pair<int,int>[rSize];\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// ticket #6588 (c mode)
|
|
check("struct MpegEncContext { int *q_intra_matrix, *q_chroma_intra_matrix; };\n"
|
|
"void dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int n, int qscale) {\n"
|
|
" const int *qmat = n < 4;\n" /* KO */
|
|
" const int *rmat = n < 4 ? " /* OK */
|
|
" ctx->q_intra_matrix :"
|
|
" ctx->q_chroma_intra_matrix;\n"
|
|
"}", /*experimental=*/false, "test.c");
|
|
ASSERT_EQUALS("[test.c:3]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
// ticket #6588 (c++ mode)
|
|
check("struct MpegEncContext { int *q_intra_matrix, *q_chroma_intra_matrix; };\n"
|
|
"void dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int n, int qscale) {\n"
|
|
" const int *qmat = n < 4;\n" /* KO */
|
|
" const int *rmat = n < 4 ? " /* OK */
|
|
" ctx->q_intra_matrix :"
|
|
" ctx->q_chroma_intra_matrix;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
|
|
// ticket #6665
|
|
check("void pivot_big(char *first, int compare(const void *, const void *)) {\n"
|
|
" char *a = first, *b = first + 1, *c = first + 2;\n"
|
|
" char* m1 = compare(a, b) < 0\n"
|
|
" ? (compare(b, c) < 0 ? b : (compare(a, c) < 0 ? c : a))\n"
|
|
" : (compare(a, c) < 0 ? a : (compare(b, c) < 0 ? c : b));\n"
|
|
"}", /*experimental=*/false, "test.c");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// #7381
|
|
check("void foo(bool *p, bool b) {\n"
|
|
" p = b;\n"
|
|
" p = &b;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Boolean value assigned to pointer.\n", errout.str());
|
|
}
|
|
|
|
void assignBoolToFloat() {
|
|
check("void foo1() {\n"
|
|
" double d = false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Boolean value assigned to floating point variable.\n", errout.str());
|
|
|
|
check("void foo2() {\n"
|
|
" float d = true;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Boolean value assigned to floating point variable.\n", errout.str());
|
|
|
|
check("void foo3() {\n"
|
|
" long double d = (2>1);\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Boolean value assigned to floating point variable.\n", errout.str());
|
|
|
|
// stability - don't crash:
|
|
check("void foo4() {\n"
|
|
" unknown = false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("struct S {\n"
|
|
" float p;\n"
|
|
"};\n"
|
|
"void f() {\n"
|
|
" S s = {0};\n"
|
|
" s.p = true;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:6]: (style) Boolean value assigned to floating point variable.\n", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolExpressionWithInt1() {
|
|
check("void f(int x) {\n"
|
|
" if ((x && 0x0f)==6)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((x && 0x0f)==0)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((x || 0x0f)==6)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((x || 0x0f)==0)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((x & 0x0f)==6)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((x | 0x0f)==6)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x)==3)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x)==3 || (8 && x)==9)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x)!=3)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x) > 3)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x) > 0)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x) < 0)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x) < 1)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if ((5 && x) > 1)\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
|
|
check("void f(int x) {\n"
|
|
" if (0 < (5 && x))\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (0 > (5 && x))\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (1 > (5 && x))\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (1 < (5 && x))\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( x > false )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( false < x )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( x < false )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( false > x )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( x >= false )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( false >= x )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( x <= false )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(bool x ) {\n"
|
|
" if ( false <= x )\n"
|
|
" a++;\n"
|
|
"}\n"
|
|
);
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("typedef int (*func)(bool invert);\n"
|
|
"void x(int, func f);\n"
|
|
"void foo(int error) {\n"
|
|
" if (error == ABC) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("int f() { return !a+b<c; }"); // #5072
|
|
ASSERT_EQUALS("",errout.str());
|
|
|
|
check("int f() { return (!a+b<c); }");
|
|
ASSERT_EQUALS("",errout.str());
|
|
|
|
{
|
|
const char code[] = "void f(int x, bool y) { if ( x != y ) {} }";
|
|
|
|
check(code, false, "test.cpp");
|
|
ASSERT_EQUALS("[test.cpp:1]: (warning) Comparison of a boolean expression with an integer.\n", errout.str());
|
|
|
|
check(code, false, "test.c");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
check("int f() { return (a+(b<5)<=c); }");
|
|
ASSERT_EQUALS("",errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolExpressionWithInt2() {
|
|
check("void f(int x) {\n"
|
|
" if (!x == 10) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (!x != 10) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (x != 10) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (10 == !x) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (10 != !x) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int x, int y) {\n"
|
|
" if (y != !x) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x, bool y) {\n"
|
|
" if (y != !x) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x) {\n"
|
|
" if (10 != x) {\n"
|
|
" printf(\"x not equal to 10\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int x, int y) {\n"
|
|
" return (!y == !x);\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("int f(int a) {\n"
|
|
" return (x()+1 == !a);\n"
|
|
"}");
|
|
TODO_ASSERT_EQUALS("error", "", errout.str());
|
|
|
|
check("void f() { if (!!a+!!b+!!c>1){} }");
|
|
ASSERT_EQUALS("",errout.str());
|
|
|
|
check("void f(int a, int b, int c) { if (a != !b || c) {} }");
|
|
ASSERT_EQUALS("",errout.str());
|
|
|
|
check("void f(int a, int b, int c) { if (1 < !!a + !!b + !!c) {} }");
|
|
ASSERT_EQUALS("",errout.str());
|
|
|
|
check("void f(int a, int b, int c) { if (1 < !(a+b)) {} }");
|
|
ASSERT_EQUALS("[test.cpp:1]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n",errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolExpressionWithInt3() {
|
|
check("int f(int x) {\n"
|
|
" return t<0>() && x;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolExpressionWithInt4() {
|
|
// #5016
|
|
check("void f() {\n"
|
|
" for(int i = 4; i > -1 < 5 ; --i) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(int a, int b, int c) {\n"
|
|
" return (a > b) < c;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer.\n", errout.str());
|
|
|
|
check("void f(int a, int b, int c) {\n"
|
|
" return x(a > b) < c;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(int a, int b, int c) {\n"
|
|
" return a > b == c;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// templates
|
|
check("struct Tokenizer { TokenList list; };\n"
|
|
"void Tokenizer::f() {\n"
|
|
" std::list<Token*> locationList;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
// #5063 - or
|
|
check("void f() {\n"
|
|
" return a > b or c < d;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("int f() {\n"
|
|
" return (a < b) != 0U;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
check("int f() {\n"
|
|
" return (a < b) != 0x0;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
check("int f() {\n"
|
|
" return (a < b) != 42U;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool1() {
|
|
check("void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare1(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}\n"
|
|
"bool compare2(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return false;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return true;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Comparison of two functions returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool2() {
|
|
check("void f(){\n"
|
|
" int temp = 4;\n"
|
|
" bool a = true;\n"
|
|
" if(compare(temp) > a){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (style) Comparison of a function returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool3() {
|
|
check("void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare(temp) > temp){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (warning) Comparison of a boolean expression with an integer.\n"
|
|
"[test.cpp:3]: (style) Comparison of a function returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool4() {
|
|
check("void f(){\n"
|
|
" int temp = 4;\n"
|
|
" bool b = compare2(6);\n"
|
|
" if(compare1(temp)> b){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare1(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}\n"
|
|
"bool compare2(int temp){\n"
|
|
" if(temp == 5){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:4]: (style) Comparison of a function returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool5() {
|
|
check("void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare1(temp) > !compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare1(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}\n"
|
|
"bool compare2(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return false;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return true;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Comparison of two functions returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfFuncReturningBool6() {
|
|
check("int compare1(int temp);\n"
|
|
"namespace Foo {\n"
|
|
" bool compare1(int temp);\n"
|
|
"}\n"
|
|
"void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("namespace Foo {\n"
|
|
" bool compare1(int temp);\n"
|
|
"}\n"
|
|
"int compare1(int temp);\n"
|
|
"void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("int compare1(int temp);\n"
|
|
"namespace Foo {\n"
|
|
" bool compare1(int temp);\n"
|
|
" void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:6]: (style) Comparison of a function returning boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
|
|
check("int compare1(int temp);\n"
|
|
"namespace Foo {\n"
|
|
" bool compare1(int temp);\n"
|
|
" void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(::compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool compare1(int temp);\n"
|
|
"void f(){\n"
|
|
" int temp = 4;\n"
|
|
" if(foo.compare1(temp) > compare2(temp)){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void checkComparisonOfBoolWithBool() {
|
|
const char code[] = "void f(){\n"
|
|
" int temp = 4;\n"
|
|
" bool b = compare2(6);\n"
|
|
" bool a = compare1(4);\n"
|
|
" if(b > a){\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}\n"
|
|
"bool compare1(int temp){\n"
|
|
" if(temp==4){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}\n"
|
|
"bool compare2(int temp){\n"
|
|
" if(temp == 5){\n"
|
|
" return true;\n"
|
|
" }\n"
|
|
" else\n"
|
|
" return false;\n"
|
|
"}\n";
|
|
check(code, true);
|
|
ASSERT_EQUALS("[test.cpp:5]: (style) Comparison of a variable having boolean value using relational (<, >, <= or >=) operator.\n", errout.str());
|
|
check(code, false);
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void bitwiseOnBoolean() { // 3062
|
|
check("void f(_Bool a, _Bool b) {\n"
|
|
" if(a & b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("void f(_Bool a, _Bool b) {\n"
|
|
" if(a | b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '||'?\n", errout.str());
|
|
|
|
check("void f(bool a, bool b) {\n"
|
|
" if(a & !b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("void f(bool a, bool b) {\n"
|
|
" if(a | !b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '||'?\n", errout.str());
|
|
|
|
check("bool a, b;\n"
|
|
"void f() {\n"
|
|
" if(a & b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("bool a, b;\n"
|
|
"void f() {\n"
|
|
" if(a & !b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("bool a, b;\n"
|
|
"void f() {\n"
|
|
" if(a | b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '||'?\n", errout.str());
|
|
|
|
check("bool a, b;\n"
|
|
"void f() {\n"
|
|
" if(a | !b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '||'?\n", errout.str());
|
|
|
|
check("void f(bool a, int b) {\n"
|
|
" if(a & b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'a' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("void f(int a, bool b) {\n"
|
|
" if(a & b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style, inconclusive) Boolean variable 'b' is used in bitwise operation. Did you mean '&&'?\n", errout.str());
|
|
|
|
check("void f(int a, int b) {\n"
|
|
" if(a & b) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(bool b) {\n"
|
|
" foo(bar, &b);\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void incrementBoolean() {
|
|
check("bool bValue = true;\n"
|
|
"void f() { bValue++; }");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Incrementing a variable of type 'bool' with postfix operator++ is deprecated by the C++ Standard. You should assign it the value 'true' instead.\n", errout.str());
|
|
|
|
check("void f(bool test){\n"
|
|
" test++;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Incrementing a variable of type 'bool' with postfix operator++ is deprecated by the C++ Standard. You should assign it the value 'true' instead.\n", errout.str());
|
|
|
|
check("void f(int test){\n"
|
|
" test++;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt1() {
|
|
check("void f(bool x) {\n"
|
|
" if (x < 10) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(bool x) {\n"
|
|
" if (10 >= x) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(bool x) {\n"
|
|
" if (x != 0) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(bool x) {\n" // #3356
|
|
" if (x == 1) {\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(bool x) {\n"
|
|
" if (x != 10) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(bool x) {\n"
|
|
" if (x == 10) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
|
|
check("void f(bool x) {\n"
|
|
" if (x == 0) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("DensePropertyMap<int, true> visited;"); // #4075
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt2() {
|
|
check("void f(bool x, int y) {\n"
|
|
" if (x == y) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer.\n", errout.str());
|
|
|
|
check("void f(int x, bool y) {\n"
|
|
" if (x == y) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer.\n", errout.str());
|
|
|
|
check("void f(bool x, bool y) {\n"
|
|
" if (x == y) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(bool x, fooClass y) {\n"
|
|
" if (x == y) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt3() {
|
|
check("void f(int y) {\n"
|
|
" if (y > false) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer.\n"
|
|
"[test.cpp:2]: (warning) Comparison of a boolean value using relational operator (<, >, <= or >=).\n", errout.str());
|
|
|
|
check("void f(int y) {\n"
|
|
" if (true == y) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer.\n", errout.str());
|
|
|
|
check("void f(bool y) {\n"
|
|
" if (y == true) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("void f(bool y) {\n"
|
|
" if (false < 5) {\n"
|
|
" printf(\"foo\");\n"
|
|
" }\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (warning) Comparison of a boolean expression with an integer other than 0 or 1.\n", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt4() {
|
|
check("void f(int x) {\n"
|
|
" if (!x == 1) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt5() {
|
|
check("void SetVisible(int index, bool visible) {\n"
|
|
" bool (SciTEBase::*ischarforsel)(char ch);\n"
|
|
" if (visible != GetVisible(index)) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt6() { // #4224 - integer is casted to bool
|
|
check("void SetVisible(bool b, int i) {\n"
|
|
" if (b == (bool)i) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void comparisonOfBoolWithInt7() { // #4846 - (!x==true)
|
|
check("void f(int x) {\n"
|
|
" if (!x == true) { }\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
}
|
|
|
|
void pointerArithBool1() { // #5126
|
|
check("void f(char *p) {\n"
|
|
" if (p+1){}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
|
|
check("void f(char *p) {\n"
|
|
" do {} while (p+1);\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
|
|
check("void f(char *p) {\n"
|
|
" while (p-1) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
|
|
check("void f(char *p) {\n"
|
|
" for (int i = 0; p+1; i++) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
|
|
check("void f(char *p) {\n"
|
|
" if (p && p+1){}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
|
|
check("void f(char *p) {\n"
|
|
" if (p+2 || p) {}\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (error) Converting pointer arithmetic result to bool. The bool is always true unless there is undefined behaviour.\n", errout.str());
|
|
}
|
|
|
|
void returnNonBool() {
|
|
check("bool f(void) {\n"
|
|
" return 0;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return 1;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return 2;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return -1;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return 1 + 1;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:2]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" int x = 0;\n"
|
|
" return x;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" int x = 10;\n"
|
|
" return x;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return 2 < 1;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" int ret = 0;\n"
|
|
" if (a)\n"
|
|
" ret = 1;\n"
|
|
" return ret;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" int ret = 0;\n"
|
|
" if (a)\n"
|
|
" ret = 3;\n"
|
|
" return ret;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:5]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" if (a)\n"
|
|
" return 3;\n"
|
|
" return 4;\n"
|
|
"}");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Non-boolean value returned from function returning bool\n"
|
|
"[test.cpp:4]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
" return;\n"
|
|
"}");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
"auto x = [](void) { return -1; };\n"
|
|
"return false;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
"auto x = [](void) { return -1; };\n"
|
|
"return 2;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
"auto x = [](void) -> int { return -1; };\n"
|
|
"return false;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("", errout.str());
|
|
|
|
check("bool f(void) {\n"
|
|
"auto x = [](void) -> int { return -1; };\n"
|
|
"return 2;\n"
|
|
"}\n");
|
|
ASSERT_EQUALS("[test.cpp:3]: (style) Non-boolean value returned from function returning bool\n", errout.str());
|
|
}
|
|
};
|
|
|
|
REGISTER_TEST(TestBool)
|