| // 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: {key: bugprone-implicit-widening-of-multiplication-result.UseCXXStaticCastsInCppSources, value: 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: {key: bugprone-implicit-widening-of-multiplication-result.UseCXXStaticCastsInCppSources, value: 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 |