1 // RUN: %check_clang_tidy -std=c99 %s bugprone-implicit-widening-of-multiplication-result %t -- -- -target x86_64-unknown-unknown -x c 2 // RUN: %check_clang_tidy %s bugprone-implicit-widening-of-multiplication-result %t -- -- -target x86_64-unknown-unknown -x c++ 3 4 _ExtInt(64) t0(_ExtInt(32) a, _ExtInt(32) b) { 5 return a * b; 6 // CHECK-NOTES: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type '_ExtInt(64)' of a multiplication performed in type '_ExtInt(32)' 7 // CHECK-NOTES: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning 8 // CHECK-NOTES: :[[@LINE-3]]:10: note: perform multiplication in a wider type 9 } 10 unsigned _ExtInt(64) t1(_ExtInt(32) a, _ExtInt(32) b) { 11 return a * b; 12 // CHECK-NOTES: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type 'unsigned _ExtInt(64)' of a multiplication performed in type '_ExtInt(32)' 13 // CHECK-NOTES: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning 14 // CHECK-NOTES: :[[@LINE-3]]:10: note: perform multiplication in a wider type 15 } 16 _ExtInt(64) t2(unsigned _ExtInt(32) a, unsigned _ExtInt(32) b) { 17 return a * b; 18 // CHECK-NOTES: :[[@LINE-1]]:10: warning: performing an implicit widening conversion to type '_ExtInt(64)' of a multiplication performed in type 'unsigned _ExtInt(32)' 19 // CHECK-NOTES: :[[@LINE-2]]:10: note: make conversion explicit to silence this warning 20 // CHECK-NOTES: :[[@LINE-3]]:10: note: perform multiplication in a wider type 21 } 22