llvm-project/compiler-rt/test/asan/TestCases/vla_chrome_testcase.cpp
Charlie Barto 73114e43ee
[compiler-rt][windows] Test fixups for MSVC. (#109887)
- add XFAIL/UNSUPPORTED annotations for tests run wtih real MSVC 
- macroify usages of clang-specific attributes in asan tests

- Add substitution for /Oy-/-fno-omit-frame-pointer
  This makes the dll_intercept_memset test work with mingw

These are most of the changes that are required to get things running
with MSVC, however there are some remaining build-flag tweaks.

Nothing in here should be a functional change.
2025-02-10 10:51:08 -08:00

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// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
// RUN: not %run %t 2>&1 | FileCheck %s
//
// MSVC doesn't support VLAs
// UNSUPPORTED: msvc
// This is reduced testcase based on Chromium code.
// See http://reviews.llvm.org/D6055?vs=on&id=15616&whitespace=ignore-all#toc.
#include "defines.h"
#include <assert.h>
#include <stdint.h>
int a = 7;
int b;
int c;
int *p;
ATTRIBUTE_NOINLINE void fn3(int *first, int second) {}
int main() {
int d = b && c;
int e[a];
assert(!(reinterpret_cast<uintptr_t>(e) & 31L));
int f;
if (d)
fn3(&f, sizeof 0 * (&c - e));
e[a] = 0;
// CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
// CHECK: WRITE of size 4 at [[ADDR]] thread T0
return 0;
}