129962 2014-03-08 01:15:51 -0800 ASSERT in createBlockFreeingThread 2014-03-10 11:13:03 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 129758 P2 Normal --- 1 mmaxfield oliver mmaxfield oldest_to_newest 988530 0 mmaxfield 2014-03-08 01:15:51 -0800 http://build.webkit.org/builders/Apple%20MountainLion%20Debug%20WK1%20%28Tests%29?numbuilds=200 The Mountain Lion Debug WK1 test bots have been crashing often for the past couple days with the same stack trace: 0 com.apple.JavaScriptCore 0x000000011049e02a WTFCrash + 42 (Assertions.cpp:333) 1 com.apple.JavaScriptCore 0x000000010fdaa9f6 JSC::createBlockFreeingThread(JSC::BlockAllocator*) + 118 (BlockAllocator.cpp:43) 2 com.apple.JavaScriptCore 0x000000010fdaa023 JSC::BlockAllocator::BlockAllocator() + 339 (BlockAllocator.cpp:56) 3 com.apple.JavaScriptCore 0x000000010fda9ec5 JSC::BlockAllocator::BlockAllocator() + 21 (BlockAllocator.cpp:59) 4 com.apple.JavaScriptCore 0x00000001100bdbc2 JSC::Heap::Heap(JSC::VM*, JSC::HeapType) + 146 (Heap.cpp:254) 5 com.apple.JavaScriptCore 0x00000001100bdb23 JSC::Heap::Heap(JSC::VM*, JSC::HeapType) + 35 (Heap.cpp:284) 6 com.apple.JavaScriptCore 0x000000011044621b JSC::VM::VM(JSC::VM::VMType, JSC::HeapType) + 235 (VM.cpp:168) 7 com.apple.JavaScriptCore 0x0000000110446121 JSC::VM::VM(JSC::VM::VMType, JSC::HeapType) + 33 (VM.cpp:325) 8 com.apple.JavaScriptCore 0x000000011044976c JSC::VM::create(JSC::HeapType) + 60 (VM.cpp:402) 988959 1 ap 2014-03-10 11:11:05 -0700 *** This bug has been marked as a duplicate of bug 129758 *** 988962 2 ap 2014-03-10 11:13:03 -0700 [ Pass Failure ] doesn't help against crashes. Removed the expectation in <http://trac.webkit.org/r165384> (the test is now skipped in platform/mac/TestExpectations).