117217 2013-06-04 17:21:21 -0700 fourthTier: Clean up AbstractValue 2013-06-05 11:13:23 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 1 fpizlo fpizlo barraclough ggaren mark.lam mhahnenberg msaboff oliver sam oldest_to_newest 897095 0 fpizlo 2013-06-04 17:21:21 -0700 Patch forthcoming. 897096 1 203743 fpizlo 2013-06-04 17:34:25 -0700 Created attachment 203743 the patch I'm going to try to come up with a test case for this... 897102 2 fpizlo 2013-06-04 18:15:24 -0700 (In reply to comment #1) > Created an attachment (id=203743) [details] > the patch > > I'm going to try to come up with a test case for this... I tried but failed. This requires a very perverse combination of circumstances to become symptomatic. 897132 3 203743 sam 2013-06-04 21:57:17 -0700 Comment on attachment 203743 the patch View in context: https://bugs.webkit.org/attachment.cgi?id=203743&action=review > Source/JavaScriptCore/dfg/DFGAbstractValue.cpp:220 > + if (!(m_type & SpecCell)) { > + ASSERT(m_currentKnownStructure.isClear()); > + ASSERT(m_futurePossibleStructure.isClear()); > + ASSERT(!m_arrayModes); > + } > + > + if (isClear()) > + ASSERT(!m_value); > + > + if (!!m_value) > + ASSERT(mergeSpeculations(m_type, speculationFromValue(m_value)) == m_type); > + > + // Note that it's possible for a prediction like (Final, []). This really means that > + // the value is bottom and that any code that uses the value is unreachable. But > + // we don't want to get pedantic about this as it would only increase the computational > + // complexity of the code. You could consider putting this all in a #if !ASSERT_DISABLED 897478 4 fpizlo 2013-06-05 11:13:23 -0700 Landed in http://trac.webkit.org/changeset/151229 203743 2013-06-04 17:34:25 -0700 2013-06-04 21:57:17 -0700 the patch blah.patch text/plain 15799 fpizlo SW5kZXg6IFNvdXJjZS9KYXZhU2NyaXB0Q29yZS9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gU291 cmNlL0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkocmV2aXNpb24gMTUxMTkyKQorKysgU291cmNl L0phdmFTY3JpcHRDb3JlL0NoYW5nZUxvZwkod29ya2luZyBjb3B5KQpAQCAtMSwzICsxLDc0IEBA CisyMDEzLTA2LTA0ICBGaWxpcCBQaXpsbyAgPGZwaXpsb0BhcHBsZS5jb20+CisKKyAgICAgICAg Zm91cnRoVGllcjogQ2xlYW4gdXAgQWJzdHJhY3RWYWx1ZQorICAgICAgICBodHRwczovL2J1Z3Mu d2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9MTE3MjE3CisKKyAgICAgICAgUmV2aWV3ZWQgYnkg Tk9CT0RZIChPT1BTISkuCisgICAgICAgIAorICAgICAgICBUaGlzIHN0YXJ0ZWQgYXMgYW4gYXR0 ZW1wdCB0byBtYWtlIGl0IHNvIHRoYXQgd2hlbiBBYnN0cmFjdFZhbHVlIGJlY29tZXMgZW1wdHks 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