Use fast_unwind_on_fatal=1 by default in ASan builds.

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)
@@ skipping 28 matching lines @@
 //     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.
 //   strip_path_prefix=Release/../../ - prefixes up to and including this
 //     substring will be stripped from source file paths in symbolized reports
 //     (if symbolize=true, which is set when running with LeakSanitizer).
+//   fast_unwind_on_fatal=1 - use the fast (frame-pointer-based) stack unwinder
+//     to print error reports. V8 doesn't generate debug info for the JIT code,
+//     so the slow unwinder may not work properly.
 #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 detect_leaks=0 "
-    "strip_path_prefix=Release/../../ ";
+    "strip_path_prefix=Release/../../ fast_unwind_on_fatal=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 "
-    "detect_leaks=0 strip_path_prefix=Release/../../ ";
+    "detect_leaks=0 strip_path_prefix=Release/../../ fast_unwind_on_fatal=1";
 #endif  // GOOGLE_CHROME_BUILD
 
 #elif defined(OS_MACOSX)
 const char *kAsanDefaultOptions =
     "strict_memcmp=0 replace_intrin=0 check_printf=1 use_sigaltstack=1 "
-    "strip_path_prefix=Release/../../ ";
+    "strip_path_prefix=Release/../../ fast_unwind_on_fatal=1";
 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.
@@ skipping 50 matching lines @@
 __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() {
   return kTSanDefaultSuppressions;
 }
 
 #endif  // THREAD_SANITIZER && OS_LINUX