24 lines · cpp
1// RUN: %check_clang_tidy %s bugprone-narrowing-conversions %t \2// RUN: -- -- -target x86_64-unknown-linux -m323 4static_assert(sizeof(int) * 8 == 32, "int is 32-bits");5static_assert(sizeof(long) * 8 == 32, "long is 32-bits");6static_assert(sizeof(long long) * 8 == 64, "long long is 64-bits");7 8void narrow_integer_to_signed_integer_is_not_ok() {9 int i; // i.e. int32_t10 long l; // i.e. int32_t11 long long ll; // i.e. int64_t12 13 unsigned int ui; // i.e. uint32_t14 unsigned long ul; // i.e. uint32_t15 unsigned long long ull; // i.e. uint64_t16 17 i = l; // int and long are the same type.18 i = ll; // int64_t does not fit in an int32_t19 // 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_t21 ll = ull; // uint64_t does not fit in an int64_t22 // 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