From 68b3014cd3a1018a95ea5dec579fb7db067f35ba Mon Sep 17 00:00:00 2001 From: Richard Smith Date: Tue, 9 Oct 2012 19:34:32 +0000 Subject: Add a runtime diagnostics library for Clang's -fcatch-undefined-behavior. llvm-svn: 165533 --- compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp (limited to 'compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp') diff --git a/compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp b/compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp new file mode 100644 index 00000000000..58f1b4870dd --- /dev/null +++ b/compiler-rt/lib/ubsan/lit_tests/Integer/negate-overflow.cpp @@ -0,0 +1,7 @@ +// RUN: %clang -fcatch-undefined-behavior %s -o %t && %t 2>&1 | FileCheck %s + +int main() { + -unsigned(-0x7fffffff - 1); // ok + // CHECK: negate-overflow.cpp:6:10: fatal error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself + return -(-0x7fffffff - 1); +} -- cgit v1.2.3