[Webkit-unassigned] [Bug 45457] [Qt] QtTestBrowser is crashing on www.index.hu

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45457





--- Comment #12 from Oliver Hunt <oliver at apple.com>  2010-10-19 11:26:05 PST ---
(In reply to comment #11)
> Running the test through 'jsc' yields some interesting valgrind output:
> 
> ==19191== Conditional jump or move depends on uninitialised value(s)
> ==19191==    at 0x428401: JSC::BytecodeGenerator::emitOpcode(JSC::OpcodeID) (BytecodeGenerator.cpp:678)

I looked at this briefly and it looks like m_lastOpcodePosition is only initialised in one constructor.  If you put up a patch to fix this i'll review.

The ProgramNode constructor has this

    , m_lastOpcodeID(op_end)
#ifndef NDEBUG
    , m_lastOpcodePosition(0)
#endif

But the other versions don't have the
#ifndef NDEBUG
    , m_lastOpcodePosition(0)
#endif

bit.

Adding that should get valgrind past this uninitialised var so we can see if it picks up anything else.

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