diff options
Diffstat (limited to 'lib/ubsan/lit_tests/Integer/negate-overflow.cpp')
-rw-r--r-- | lib/ubsan/lit_tests/Integer/negate-overflow.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/ubsan/lit_tests/Integer/negate-overflow.cpp b/lib/ubsan/lit_tests/Integer/negate-overflow.cpp new file mode 100644 index 000000000000..2ee4f10115e8 --- /dev/null +++ b/lib/ubsan/lit_tests/Integer/negate-overflow.cpp @@ -0,0 +1,12 @@ +// RUN: %clang -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=CHECKS +// RUN: %clang -fsanitize=unsigned-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=CHECKU + +int main() { + // CHECKS-NOT: runtime error + // CHECKU: negate-overflow.cpp:[[@LINE+2]]:3: runtime error: negation of 2147483648 cannot be represented in type 'unsigned int' + // CHECKU-NOT: cast to an unsigned + -unsigned(-0x7fffffff - 1); // ok + // CHECKS: negate-overflow.cpp:[[@LINE+2]]:10: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself + // CHECKU-NOT: runtime error + return -(-0x7fffffff - 1); +} |