Hi Nathan,

I started noticing the same problem this week, too. The class looks
like it's supposed to help developers by attaching a C++ debugger
whenever a critical exception is raised, so they can view the stack
trace and inspect variables. What I think happens is that Chromium
thinks that Xcode's debugger is listening when it really isn't, and it
crashes.

When you run Chromium.app via Run --> Debug, you can get over the
breakpoint by pressing the continue button, or typing 'c' in gdb. But
if you run the application via Run --> Run or by opening it in Finder,
the breakpoint turns fatal and terminates the app.

I've just commented out the two asm() lines in my tree because I find
the breakpoints more annoying than helpful. I think it would be better
if DebugUtil's features were enabled with a build or runtime flag,
rather than having to resort to commenting it out.

- Robert Sesek

On Jun 6, 10:48 pm, Nathan Summer <[email protected]>
wrote:
> Hi,
> I compile chrome and run under XCode.
>
> But it breaks here, can you please tell me why? And what does BreakDebugger
> do?
>
> // static
>
> void DebugUtil::BreakDebugger() {
>
> #if defined(ARCH_CPU_ARM_FAMILY)
>
>   asm("bkpt 0");
>
> #else
>
>   asm("int3");
>
> #endif
>
> }
>
> Here is the stack trace:
>
> #0 0x0058c43f in DebugUtil::BreakDebugger at debug_util_posix.cc:116
> #1 0x005ad984 in logging::LogMessage::~LogMessage at logging.cc:545
> #2 0x0040e751 in SafeBrowsingService::UpdateStarted at
> safe_browsing_service.cc:466
> #3 0x003e7c4a in SafeBrowsingProtocolManager::IssueUpdateRequest at
> protocol_manager.cc:486
> #4 0x003e7cc9 in SafeBrowsingProtocolManager::GetNextUpdate at
> protocol_manager.cc:157
> #5 0x003ed24a in DispatchToMethod<SafeBrowsingProtocolManager, void
> (SafeBrowsingProtocolManager::*)()> at tuple.h:412
> #6 0x003ed28d in base::BaseTimer<SafeBrowsingProtocolManager,
> false>::TimerTask::Run at timer.h:160
> #7 0x005b07c3 in MessageLoop::RunTask at message_loop.cc:309
> #8 0x005b0b87 in MessageLoop::DeferOrRunPendingTask at message_loop.cc:317
> #9 0x005b0d0a in MessageLoop::DoDelayedWork at message_loop.cc:450
> #10 0x005bb154 in base::MessagePumpLibevent::Run at
> message_pump_libevent.cc:228
> #11 0x005b18bb in MessageLoop::RunInternal at message_loop.cc:198
> #12 0x005b18d7 in MessageLoop::RunHandler at message_loop.cc:181
> #13 0x005b1962 in MessageLoop::Run at message_loop.cc:155
> #14 0x005f30a9 in base::Thread::ThreadMain at thread.cc:156
> #15 0x005c72c4 in ThreadFunc at platform_thread_posix.cc:26
> #16 0x92129155 in _pthread_start
> #17 0x92129012 in thread_start
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