[Webkit-unassigned] [Bug 157273] CRASH when continuing from uncaught exception in inspector

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon May 2 13:43:41 PDT 2016


https://bugs.webkit.org/show_bug.cgi?id=157273

Joseph Pecoraro <joepeck at webkit.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |joepeck at webkit.org

--- Comment #1 from Joseph Pecoraro <joepeck at webkit.org> ---
(lldb) btjs
* thread #1: tid = 0x52e179, 0x000000010b0978bc, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=1, addre????
    frame #0: 0x000000010b0978bc JavaScriptCore`JSC::JSCell::isString(this=0x0000000000000000) const + 12 at JSCellInlines.h:160
    frame #1: 0x000000010b147800 JavaScriptCore`JSC::JSCell::toBoolean(this=0x0000000000000000, exec=0x00007fff5830b0e0) const + 32 at JSCellInlines.h:251
    frame #2: 0x000000010b1477b8 JavaScriptCore`JSC::JSValue::toBoolean(this=0x00007fff5830afd0, exec=0x00007fff5830b0e0) const + 200 at JSString.h:759
    frame #3: 0x000000010bb502b1 JavaScriptCore`::llint_slow_path_jtrue(exec=0x00007fff5830b0e0, pc=0x000000011d829448) + 129 at LLIntSlowPaths.cpp:944
    frame #4: 0x000000010bb5c580 evaluateOnCallFrame#CeyOXK [LLInt](Cell[Object ID: 1009]: 0x12113ff80, <JSValue()>, \"{\"ordinal\":0,\"injectedScriptId\":1}\", \"\n//# sourceURL=__WebInspectorInternal__\nthis\", \"watch-expressions\", False, Fa
    frame #5: 0x000000010bb5684e JavaScriptCore`llintPCRangeStart + 334
    frame #6: 0x000000010b9650ea JavaScriptCore`JSC::JITCode::execute(this=0x000000011d8204d8, vm=0x0000000120df1000, protoCallFrame=0x00007fff5830b280) + 218 at JITCode.cpp:80
    frame #7: 0x000000010b8f859c JavaScriptCore`JSC::Interpreter::executeCall(this=0x000000011d9f3630, callFrame=0x00000001211d7740, function=0x000000012111fb20, callType=JS, callData=0x00007fff5830b618, thisValue=JSValue at 0x00007fff5830b340, args=0x00007fff5830b5d0) + 1100 at Interpreter.cpp:1020
    frame #8: 0x000000010b1cf63e JavaScriptCore`JSC::call(exec=0x00000001211d7740, functionObject=JSValue at 0x00007fff5830b3c0, callType=JS, callData=0x00007fff5830b618, thisValue=JSValue at 0x00007fff5830b3b8, args=0x00007fff5830b5d0) + 190 at CallData.cpp:40
    frame #9: 0x000000010b1cf6a3 JavaScriptCore`JSC::call(exec=0x00000001211d7740, functionObject=JSValue at 0x00007fff5830b440, callType=JS, callData=0x00007fff5830b618, thisValue=JSValue at 0x00007fff5830b438, args=0x00007fff5830b5d0, returnedException=0x00007fff5830b5f8) + 83 at CallData.cpp:45
    frame #10: 0x000000010f30de9b WebCore`WebCore::JSMainThreadExecState::call(exec=0x00000001211d7740, functionObject=JSValue at 0x00007fff5830b4c0, callType=JS, callData=0x00007fff5830b618, thisValue=JSValue at 0x00007fff5830b4b8, args=0x00007fff5830b5d0, returnedException=0x00007fff5830b5f8) + 107 at JSMainThreadExecState.h:57
    frame #11: 0x000000010f5a4bfd WebCore`WebCore::functionCallHandlerFromAnyThread(exec=0x00000001211d7740, functionObject=JSValue at 0x00007fff5830b540, callType=JS, callData=0x00007fff5830b618, thisValue=JSValue at 0x00007fff5830b538, args=0x00007fff5830b5d0, returnedException=0x00007fff5830b5f8) + 109 at JSMainThreadExecState.cpp:44
...

(lldb) f 2
frame #2: 0x000000010b1477b8 JavaScriptCore`JSC::JSValue::toBoolean(this=0x00007fff5830afd0, exec=0x00007fff5830b0e0) const + 200 at JSString.h:759
   756         if (isDouble())
   757             return asDouble() > 0.0 || asDouble() < 0.0; // false for NaN
   758         if (isCell())
-> 759             return asCell()->toBoolean(exec);
   760         return isTrue(); // false, null, and undefined all convert to false.
   761     }
   762     

(lldb) p isCell()
(bool) $3 = true

(lldb) p asCell()
(JSC::JSCell *) $4 = 0x0000000000000000

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