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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-10-09 19:34:32 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2012-10-09 19:34:32 +0000 |
| commit | 68b3014cd3a1018a95ea5dec579fb7db067f35ba (patch) | |
| tree | 2af2f2975db7a7b8c8f2ff132436af6025623351 /compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp | |
| parent | a88397d9bacf0fc59ad4c5cfd244648528aeb195 (diff) | |
| download | bcm5719-llvm-68b3014cd3a1018a95ea5dec579fb7db067f35ba.tar.gz bcm5719-llvm-68b3014cd3a1018a95ea5dec579fb7db067f35ba.zip | |
Add a runtime diagnostics library for Clang's -fcatch-undefined-behavior.
llvm-svn: 165533
Diffstat (limited to 'compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp')
| -rw-r--r-- | compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp b/compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp new file mode 100644 index 00000000000..1ba968da52c --- /dev/null +++ b/compiler-rt/lib/ubsan/lit_tests/Integer/mul-overflow.cpp @@ -0,0 +1,14 @@ +// RUN: %clang -fcatch-undefined-behavior %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: fatal error: signed integer overflow: 65535 * 32769 cannot be represented in type 'int' + (void)(uint16_t(0xffff) * uint16_t(0x8001)); +} |
