diff options
Diffstat (limited to 'compiler-rt/lib/ubsan/lit_tests/Integer/add-overflow.cpp')
| -rw-r--r-- | compiler-rt/lib/ubsan/lit_tests/Integer/add-overflow.cpp | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/compiler-rt/lib/ubsan/lit_tests/Integer/add-overflow.cpp b/compiler-rt/lib/ubsan/lit_tests/Integer/add-overflow.cpp new file mode 100644 index 00000000000..781ccf3a6b9 --- /dev/null +++ b/compiler-rt/lib/ubsan/lit_tests/Integer/add-overflow.cpp @@ -0,0 +1,27 @@ +// RUN: %clang -DADD_I32 -fcatch-undefined-behavior %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I32 +// RUN: %clang -DADD_I64 -fcatch-undefined-behavior %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I64 +// RUN: %clang -DADD_I128 -fcatch-undefined-behavior %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=ADD_I128 + +#include <stdint.h> + +int main() { + // These promote to 'int'. + (void)(int8_t(0x7f) + int8_t(0x7f)); + (void)(int16_t(0x3fff) + int16_t(0x4000)); + +#ifdef ADD_I32 + int32_t k = 0x12345678; + k += 0x789abcde; + // CHECK-ADD_I32: add-overflow.cpp:14:5: fatal error: signed integer overflow: 305419896 + 2023406814 cannot be represented in type 'int32_t' (aka 'int') +#endif + +#ifdef ADD_I64 + (void)(int64_t(8000000000000000000ll) + int64_t(2000000000000000000ll)); + // CHECK-ADD_I64: 8000000000000000000 + 2000000000000000000 cannot be represented in type 'long' +#endif + +#ifdef ADD_I128 + (void)((__int128_t(1) << 126) + (__int128_t(1) << 126)); + // CHECK-ADD_I128: 0x40000000000000000000000000000000 + 0x40000000000000000000000000000000 cannot be represented in type '__int128' +#endif +} |
