| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // This file contains the default options for various compiler-based dynamic |
| // tools. |
| |
| #include "build/build_config.h" |
| |
| // Functions returning default options are declared weak in the tools' runtime |
| // libraries. To make the linker pick the strong replacements for those |
| // functions from this module, we explicitly force its inclusion by passing |
| // -Wl,-u_sanitizer_options_link_helper |
| extern "C" |
| void _sanitizer_options_link_helper() { } |
| |
| #if defined(ADDRESS_SANITIZER) |
| // Default options for AddressSanitizer in various configurations: |
| // strict_memcmp=1 - disable the strict memcmp() checking |
| // (http://crbug.com/178677 and http://crbug.com/178404). |
| // malloc_context_size=5 - limit the size of stack traces collected by ASan |
| // for each malloc/free by 5 frames. These stack traces tend to accumulate |
| // very fast in applications using JIT (v8 in Chrome's case), see |
| // https://code.google.com/p/address-sanitizer/issues/detail?id=177 |
| // symbolize=false - disable the in-process symbolization, which isn't 100% |
| // compatible with the existing sandboxes and doesn't make much sense for |
| // stripped official binaries. |
| // legacy_pthread_cond=1 - run in the libpthread 2.2.5 compatibility mode to |
| // work around libGL.so using the obsolete API, see |
| // http://crbug.com/341805. This may break if pthread_cond_t objects are |
| // accessed by both instrumented and non-instrumented binaries (e.g. if |
| // they reside in shared memory). This option is going to be deprecated in |
| // upstream AddressSanitizer and must not be used anywhere except the |
| // official builds. |
| // replace_intrin=0 - do not intercept memcpy(), memmove() and memset() to |
| // work around http://crbug.com/162461 (ASan report in OpenCL on Mac). |
| // check_printf=1 - check the memory accesses to printf (and other formatted |
| // output routines) arguments. |
| // use_sigaltstack=1 - handle signals on an alternate signal stack. Useful |
| // for stack overflow detection. |
| #if defined(OS_LINUX) |
| #if defined(GOOGLE_CHROME_BUILD) |
| // Default AddressSanitizer options for the official build. These do not affect |
| // tests on buildbots (which don't set GOOGLE_CHROME_BUILD) or non-official |
| // Chromium builds. |
| const char kAsanDefaultOptions[] = |
| "legacy_pthread_cond=1 malloc_context_size=5 strict_memcmp=0 " |
| "symbolize=false check_printf=1 use_sigaltstack=1"; |
| #else |
| // Default AddressSanitizer options for buildbots and non-official builds. |
| const char *kAsanDefaultOptions = |
| "strict_memcmp=0 symbolize=false check_printf=1 use_sigaltstack=1"; |
| #endif // GOOGLE_CHROME_BUILD |
| |
| #elif defined(OS_MACOSX) |
| const char *kAsanDefaultOptions = |
| "strict_memcmp=0 replace_intrin=0 check_printf=1 use_sigaltstack=1"; |
| #endif // OS_LINUX |
| |
| #if defined(OS_LINUX) || defined(OS_MACOSX) |
| extern "C" |
| __attribute__((no_sanitize_address)) |
| const char *__asan_default_options() { |
| return kAsanDefaultOptions; |
| } |
| #endif // OS_LINUX || OS_MACOSX |
| #endif // ADDRESS_SANITIZER |
