diff options
Diffstat (limited to 'lib/ubsan/lit_tests/TestCases/Integer/mul-overflow.cpp')
-rw-r--r-- | lib/ubsan/lit_tests/TestCases/Integer/mul-overflow.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/ubsan/lit_tests/TestCases/Integer/mul-overflow.cpp b/lib/ubsan/lit_tests/TestCases/Integer/mul-overflow.cpp new file mode 100644 index 000000000000..1cfe23f57213 --- /dev/null +++ b/lib/ubsan/lit_tests/TestCases/Integer/mul-overflow.cpp @@ -0,0 +1,14 @@ +// RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s + +#include <stdint.h> + +int main() { + // These promote to 'int'. + (void)(int8_t(-2) * int8_t(0x7f)); + (void)(int16_t(0x7fff) * int16_t(0x7fff)); + (void)(uint16_t(0xffff) * int16_t(0x7fff)); + (void)(uint16_t(0xffff) * uint16_t(0x8000)); + + // CHECK: mul-overflow.cpp:13:27: runtime error: signed integer overflow: 65535 * 32769 cannot be represented in type 'int' + (void)(uint16_t(0xffff) * uint16_t(0x8001)); +} |