diff options
author | Mike Aizatsky <aizatsky@chromium.org> | 2016-04-27 18:02:21 +0000 |
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committer | Mike Aizatsky <aizatsky@chromium.org> | 2016-04-27 18:02:21 +0000 |
commit | 327e73030b57359155c84e3be635e4870c674172 (patch) | |
tree | c3111d5db6fc9f2eb9a94f025342a3c0db9fb02a /test | |
parent | a6a82f392638c9afac77850851e7e8f0f5ddb2a3 (diff) |
[sanitizers] read/write page fault detection on mac.
Summary: Resubmit of http://reviews.llvm.org/D19495 enabled only on intel.
Subscribers: kubabrecka
Differential Revision: http://reviews.llvm.org/D19561
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@267750 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/asan/TestCases/Darwin/segv_read_write.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/asan/TestCases/Darwin/segv_read_write.c b/test/asan/TestCases/Darwin/segv_read_write.c new file mode 100644 index 000000000..036fdc490 --- /dev/null +++ b/test/asan/TestCases/Darwin/segv_read_write.c @@ -0,0 +1,26 @@ +// RUN: %clangxx_asan -std=c++11 -O0 %s -o %t +// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=READ +// RUN: not %run %t write 2>&1 | FileCheck %s --check-prefix=WRITE +// REQUIRES: x86-target-arch + +#include <sys/mman.h> + +static volatile int sink; +__attribute__((noinline)) void Read(int *ptr) { sink = *ptr; } +__attribute__((noinline)) void Write(int *ptr) { *ptr = 0; } +int main(int argc, char **argv) { + // Writes to shadow are detected as reads from shadow gap (because of how the + // shadow mapping works). This is kinda hard to fix. Test a random address in + // the application part of the address space. + void *volatile p = + mmap(nullptr, 4096, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); + munmap(p, 4096); + if (argc == 1) + Read((int *)p); + else + Write((int *)p); +} +// READ: AddressSanitizer: SEGV on unknown address +// READ: The signal is caused by a READ memory access. +// WRITE: AddressSanitizer: SEGV on unknown address +// WRITE: The signal is caused by a WRITE memory access. |