[Webkit-unassigned] [Bug 121710] REGRESSION(r153215): New iCloud site crashes

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Sep 20 14:57:45 PDT 2013


https://bugs.webkit.org/show_bug.cgi?id=121710





--- Comment #3 from Oliver Hunt <oliver at apple.com>  2013-09-20 14:56:50 PST ---
If we bring back the assertion here:
    for (m_indexInBlock = 0; m_indexInBlock < block.size(); ++m_indexInBlock) {
        m_currentNode = block[m_indexInBlock];

        // We may have his a contradiction that the CFA was aware of but that the JIT
        // didn't cause directly.
        if (!m_state.isValid()) {
            RELEASE_ASSERT_NOT_REACHED(); <---
            bail();
            return;
        }

We hit it, implying the CFA is deciding there's a contradiction:

  --> capitalize#AzCeyu:<0x117848e70, bc#39, Call, known callee: Cell: 0x117c18430 (0x10a93f270: Function, NonArray), numArgs+this = 3, stack >= r12>
    34:           <!0:->    InlineStart(MustGen, bc#0)
    35:  skipped  < 0:->    MovHint(@9<String>, r15(M~<String>), bc#1)
    36:           <!0:->    CheckStructure(Cell:@9<String>, MustGen|CanExit, struct(0x10a93d2f0: NonArray), bc#4)

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