diff options
Diffstat (limited to 'lib/ubsan/lit_tests/Integer/uincdec-overflow.cpp')
| -rw-r--r-- | lib/ubsan/lit_tests/Integer/uincdec-overflow.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/ubsan/lit_tests/Integer/uincdec-overflow.cpp b/lib/ubsan/lit_tests/Integer/uincdec-overflow.cpp new file mode 100644 index 000000000000..6b677ca5bd35 --- /dev/null +++ b/lib/ubsan/lit_tests/Integer/uincdec-overflow.cpp @@ -0,0 +1,16 @@ +// RUN: %clang -DOP=n++ -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=INC %s +// RUN: %clang -DOP=++n -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=INC %s +// RUN: %clang -DOP=m-- -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=DEC %s +// RUN: %clang -DOP=--m -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck --check-prefix=DEC %s + +#include <stdint.h> + +int main() { + unsigned n = 0xfffffffd; + n++; + n++; + unsigned m = 0; + // CHECK-INC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 4294967295 + 1 cannot be represented in type 'unsigned int' + // CHECK-DEC: uincdec-overflow.cpp:15:3: runtime error: unsigned integer overflow: 0 - 1 cannot be represented in type 'unsigned int' + OP; +} |