// RUN: %check_clang_tidy -check-suffixes=ALL,C -std=c99 %s bugprone-implicit-widening-of-multiplication-result %t -- -- -target x86_64-unknown-unknown -x c
// RUN: %check_clang_tidy -check-suffixes=ALL,CXX %s bugprone-implicit-widening-of-multiplication-result %t -- -- -target x86_64-unknown-unknown -x c++
// RUN: %check_clang_tidy -check-suffixes=ALL,C -std=c99 %s bugprone-implicit-widening-of-multiplication-result %t -- \
// RUN: -config='{CheckOptions: { \
// RUN: bugprone-implicit-widening-of-multiplication-result.UseCXXStaticCastsInCppSources: false \
// RUN: }}' -- -target x86_64-unknown-unknown -x c
// RUN: %check_clang_tidy -check-suffixes=ALL,C %s bugprone-implicit-widening-of-multiplication-result %t -- \
// RUN: -config='{CheckOptions: { \
// RUN: bugprone-implicit-widening-of-multiplication-result.UseCXXStaticCastsInCppSources: false \
// RUN: }}' -- -target x86_64-unknown-unknown -x c++
long t0(int a, int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-C: (long)( )
// CHECK-NOTES-CXX: static_cast<long>( )
// CHECK-NOTES-ALL: :[[@LINE-5]]:10: note: perform multiplication in a wider type
// CHECK-NOTES-C: (long)
// CHECK-NOTES-CXX: static_cast<long>( )
}
unsigned long t1(int a, int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'unsigned long' of a multiplication performed in type 'int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-C: (unsigned long)( )
// CHECK-NOTES-CXX: static_cast<unsigned long>( )
// CHECK-NOTES-ALL: :[[@LINE-5]]:10: note: perform multiplication in a wider type
// CHECK-NOTES-C: (long)
// CHECK-NOTES-CXX: static_cast<long>( )
}
long t2(unsigned int a, int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-C: (long)( )
// CHECK-NOTES-CXX: static_cast<long>( )
// CHECK-NOTES-ALL: :[[@LINE-5]]:10: note: perform multiplication in a wider type
// CHECK-NOTES-C: (unsigned long)
// CHECK-NOTES-CXX: static_cast<unsigned long>( )
}
unsigned long t3(unsigned int a, int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'unsigned long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-C: (unsigned long)( )
// CHECK-NOTES-CXX: static_cast<unsigned long>( )
// CHECK-NOTES-ALL: :[[@LINE-5]]:10: note: perform multiplication in a wider type
// CHECK-NOTES-C: (unsigned long)
// CHECK-NOTES-CXX: static_cast<unsigned long>( )
}
long t4(int a, unsigned int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:10: note: perform multiplication in a wider type
}
unsigned long t5(int a, unsigned int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'unsigned long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:10: note: perform multiplication in a wider type
}
long t6(unsigned int a, unsigned int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:10: note: perform multiplication in a wider type
}
unsigned long t7(unsigned int a, unsigned int b) {
return a * b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'unsigned long' of a multiplication performed in type 'unsigned int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:10: note: perform multiplication in a wider type
}
long t8(int a, int b) {
return (a * b);
// CHECK-NOTES-ALL: :[[@LINE-1]]:11: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:11: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:11: note: perform multiplication in a wider type
}
long t9(int a, int b) {
return (a)*b;
// CHECK-NOTES-ALL: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'long' of a multiplication performed in type 'int'
// CHECK-NOTES-ALL: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning
// CHECK-NOTES-ALL: :[[@LINE-3]]:10: note: perform multiplication in a wider type
}
long n10(int a, int b) {
return (long)(a * b);
}
long n11(int a, int b) {
return (unsigned long)(a * b);
}
long n12(long a, int b) {
return a * b;
}
long n13(int a, long b) {
return a * b;
}
long n14(int a, int b, int c) {
return a + b * c;
}
long n15(int a, int b, int c) {
return a * b + c;
}
#ifdef __cplusplus
template <typename T1, typename T2>
T2 template_test(T1 a, T1 b) {
return a * b;
}
long template_test_instantiation(int a, int b) {
return template_test<int, long>(a, b);
}
#endif
Codebase Browser
llvm