Add default options/suppressions for LeakSanitizer.

build/sanitizers/sanitizer_options.cc

 // 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"
 
 #if defined(ADDRESS_SANITIZER) && defined(OS_MACOSX)
 #include <crt_externs.h>  // for _NSGetArgc, _NSGetArgv
 #include <string.h>
 #endif  // ADDRESS_SANITIZER && OS_MACOSX
 
+#if defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \
+    defined(MEMORY_SANITIZER) || defined(THREAD_SANITIZER)
 // 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() { }
 
+// The callbacks we define here will be called from the sanitizer runtime, but
+// aren't referenced from the Chrome executable. We must ensure that those
+// callbacks are not sanitizer-instrumented, and that they aren't stripped by
+// the linker.
+#define SANITIZER_HOOK_ATTRIBUTE          \
+  extern "C"                              \
+  __attribute__((no_sanitize_address))    \
+  __attribute__((no_sanitize_memory))     \
+  __attribute__((no_sanitize_thread))     \
+  __attribute__((visibility("default")))  \
+  __attribute__((used))
+#endif
+
 #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
@@ skipping 39 matching lines @@
 #elif defined(OS_MACOSX)
 const char *kAsanDefaultOptions =
     "strict_memcmp=0 replace_intrin=0 check_printf=1 use_sigaltstack=1 "
     "strip_path_prefix=Release/../../ fast_unwind_on_fatal=1 "
     "detect_stack_use_after_return=1 detect_odr_violation=0 ";
 static const char kNaClDefaultOptions[] = "handle_segv=0";
 static const char kNaClFlag[] = "--type=nacl-loader";
 #endif  // OS_LINUX
 
 #if defined(OS_LINUX) || defined(OS_MACOSX)
-extern "C"
-__attribute__((no_sanitize_address))
-__attribute__((visibility("default")))
-// The function isn't referenced from the executable itself. Make sure it isn't
-// stripped by the linker.
-__attribute__((used))
-const char *__asan_default_options() {
+SANITIZER_HOOK_ATTRIBUTE const char *__asan_default_options() {
 #if defined(OS_MACOSX)
   char*** argvp = _NSGetArgv();
   int* argcp = _NSGetArgc();
   if (!argvp || !argcp) return kAsanDefaultOptions;
   char** argv = *argvp;
   int argc = *argcp;
   for (int i = 0; i < argc; ++i) {
     if (strcmp(argv[i], kNaClFlag) == 0) {
       return kNaClDefaultOptions;
     }
@@ skipping 15 matching lines @@
 //   print_suppressions=1 - print the list of matched suppressions.
 //   history_size=7 - make the history buffer proportional to 2^7 (the maximum
 //     value) to keep more stack traces.
 //   strip_path_prefix=Release/../../ - prefixes up to and including this
 //     substring will be stripped from source file paths in symbolized reports.
 const char kTsanDefaultOptions[] =
     "detect_deadlocks=1 second_deadlock_stack=1 report_signal_unsafe=0 "
     "report_thread_leaks=0 print_suppressions=1 history_size=7 "
     "strip_path_prefix=Release/../../ ";
 
-extern "C"
-__attribute__((no_sanitize_thread))
-__attribute__((visibility("default")))
-// The function isn't referenced from the executable itself. Make sure it isn't
-// stripped by the linker.
-__attribute__((used))
-const char *__tsan_default_options() {
+SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_options() {
   return kTsanDefaultOptions;
 }
 
 extern "C" char kTSanDefaultSuppressions[];
 
-extern "C"
-__attribute__((no_sanitize_thread))
-__attribute__((visibility("default")))
-// The function isn't referenced from the executable itself. Make sure it isn't
-// stripped by the linker.
-__attribute__((used))
-const char *__tsan_default_suppressions() {
+SANITIZER_HOOK_ATTRIBUTE const char *__tsan_default_suppressions() {
   return kTSanDefaultSuppressions;
 }
 
 #endif  // THREAD_SANITIZER && OS_LINUX
+
+#if defined(LEAK_SANITIZER)
+// Default options for LeakSanitizer:
+//   print_suppressions=1 - print the list of matched suppressions.
+//   strip_path_prefix=Release/../../ - prefixes up to and including this
+//     substring will be stripped from source file paths in symbolized reports.
+const char kLsanDefaultOptions[] =
+    "print_suppressions=1 strip_path_prefix=Release/../../ ";
+
+SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_options() {
+  return kLsanDefaultOptions;
+}
+
+extern "C" char kLSanDefaultSuppressions[];
+
+SANITIZER_HOOK_ATTRIBUTE const char *__lsan_default_suppressions() {
+  return kLSanDefaultSuppressions;
+}
+
+#endif  // LEAK_SANITIZER