Files
clang-p2996/compiler-rt/test/ubsan/TestCases/Integer/incdec-overflow.cpp
Peter Collingbourne a68d90fa52 UBSan: Enable runtime library tests on Windows, and get most tests passing.
Specifically:

- Disable int128 tests on Windows, as MSVC cl.exe does not support
  int128, so we might not have been able to build the runtime
  with int128 support.

- XFAIL the vptr tests as we lack Microsoft ABI support.

- XFAIL enum.cpp as UBSan fails to add the correct instrumentation code
  for some reason.

- Modify certain tests that build executables multiple times to use
  unique names for each executable. This works around a race condition
  observed on Windows.

- Implement IsAccessibleMemoryRange for Windows to fix the last
  misaligned.cpp test.

- Introduce a substitution for testing crashes on Windows using
  KillTheDoctor.

Differential Revision: http://reviews.llvm.org/D10864

llvm-svn: 241303
2015-07-02 22:08:38 +00:00

17 lines
867 B
C++

// RUN: %clangxx -DOP=n++ -fsanitize=signed-integer-overflow %s -o %t1 && %run %t1 2>&1 | FileCheck %s --check-prefix=PLUS
// RUN: %clangxx -DOP=++n -fsanitize=signed-integer-overflow %s -o %t2 && %run %t2 2>&1 | FileCheck %s --check-prefix=PLUS
// RUN: %clangxx -DOP=m-- -fsanitize=signed-integer-overflow %s -o %t3 && %run %t3 2>&1 | FileCheck %s --check-prefix=MINUS
// RUN: %clangxx -DOP=--m -fsanitize=signed-integer-overflow %s -o %t4 && %run %t4 2>&1 | FileCheck %s --check-prefix=MINUS
#include <stdint.h>
int main() {
int n = 0x7ffffffd;
n++;
n++;
int m = -n - 1;
OP;
// PLUS: incdec-overflow.cpp:[[@LINE-1]]:3: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
// MINUS: incdec-overflow.cpp:[[@LINE-2]]:3: runtime error: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'
}