From 8ef50bf3d1c287b5013c3168de77a462dfce3495 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Thu, 6 Nov 2014 22:49:13 +0000 Subject: Import compiler-rt release_34 branch r197381. https://llvm.org/svn/llvm-project/compiler-rt/branches/release_34@197381 --- lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp (limited to 'lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp') diff --git a/lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp b/lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp new file mode 100644 index 0000000000000..6bee3eea29802 --- /dev/null +++ b/lib/ubsan/lit_tests/TestCases/Integer/negate-overflow.cpp @@ -0,0 +1,12 @@ +// RUN: %clangxx -fsanitize=signed-integer-overflow %s -o %t && %t 2>&1 | FileCheck %s --check-prefix=CHECKS +// RUN: %clangxx -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); +} -- cgit v1.2.3