1 // RUN: %check_clang_tidy %s bugprone-narrowing-conversions %t \ 2 // RUN: -- -- -target x86_64-unknown-linux -m32 3 4 static_assert(sizeof(int) * 8 == 32, "int is 32-bits"); 5 static_assert(sizeof(long) * 8 == 32, "long is 32-bits"); 6 static_assert(sizeof(long long) * 8 == 64, "long long is 64-bits"); 7 8 void narrow_integer_to_signed_integer_is_not_ok() { 9 int i; // i.e. int32_t 10 long l; // i.e. int32_t 11 long long ll; // i.e. int64_t 12 13 unsigned int ui; // i.e. uint32_t 14 unsigned long ul; // i.e. uint32_t 15 unsigned long long ull; // i.e. uint64_t 16 17 i = l; // int and long are the same type. 18 i = ll; // int64_t does not fit in an int32_t 19 // CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to signed type 'int' is implementation-defined [bugprone-narrowing-conversions] 20 ll = ul; // uint32_t fits into int64_t 21 ll = ull; // uint64_t does not fit in an int64_t 22 // CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned long long' to signed type 'long long' is implementation-defined [bugprone-narrowing-conversions] 23 } 24