Status: Untriaged
Owner: ----
Labels: Type-Bug Pri-3 OS-Mac Area-Misc Size-Medium

New issue 18215 by [email protected]: Uninitialized memory read in  
_DPSNextEvent() in base::MessagePumpNSApplication::DoRun()
http://code.google.com/p/chromium/issues/detail?id=18215

Seen in the past on the mac valgrind ui 1 of 3 bot.
Happens in about half the individual ui tests in a local debug run of
tools/valgrind/shard_all_tests.sh.

Stack:

Conditional jump or move depends on uninitialised value(s)
   _DPSNextEvent  
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
   -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
   -[NSApplication run]
(/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit)
   base::MessagePumpNSApplication::DoRun(base::MessagePump::Delegate*)
(base/message_pump_mac.mm:482)
   base::MessagePumpCFRunLoopBase::Run(base::MessagePump::Delegate*)
(base/message_pump_mac.mm:146)
   MessageLoop::RunInternal() (base/message_loop.cc:198)
   MessageLoop::RunHandler() (base/message_loop.cc:181)
   MessageLoop::Run() (base/message_loop.cc:155)
   (anonymous namespace)::RunUIMessageLoop(BrowserProcess*)
(chrome/browser/browser_main.cc:197)
   BrowserMain(MainFunctionParams const&)  
(chrome/browser/browser_main.cc:786)

Seems like a system issue that just needs suppressing.


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