Summary: | <1/100 probability FTL failure: v8-v6/v8-deltablue.js.ftl-eager: Exception: TypeError: undefined is not an object (evaluating 'c.isInput') | ||||||||
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Product: | WebKit | Reporter: | Filip Pizlo <fpizlo> | ||||||
Component: | JavaScriptCore | Assignee: | Filip Pizlo <fpizlo> | ||||||
Status: | RESOLVED FIXED | ||||||||
Severity: | Normal | CC: | barraclough, buildbot, ggaren, mark.lam, mhahnenberg, mmirman, msaboff, nrotem, oliver, rniwa, sam | ||||||
Priority: | P2 | ||||||||
Version: | 528+ (Nightly build) | ||||||||
Hardware: | All | ||||||||
OS: | All | ||||||||
Bug Depends on: | |||||||||
Bug Blocks: | 112840 | ||||||||
Attachments: |
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Description
Filip Pizlo
2014-02-05 15:52:30 PST
I can get it to repro more frequently if I increase the load on the machine. It's a FTL miscompile on chainTest#BRCzIm, which has 430 bytecode instructions. Reduced test case: function Foo(a, b) { this.f = a.f; this.g = b.f + 1; } function foo(a, b) { return new Foo(a, b); } noInline(foo); for (var i = 0; i < 100000; ++i) { var result = foo({f:1}, {f:2}); if (result.f != 1) throw "Error: bad result.f: " + result.f; if (result.g != 3) throw "Error: bad result.g: " + result.g; } var result = foo({f:1}, {f:2.5}); if (result.f != 1) throw "Error: bad result.f: " + result.f; if (result.g != 3.5) throw "Error: bad result.f: " + result.g; Created attachment 223681 [details]
the patch
Comment on attachment 223681 [details] the patch Attachment 223681 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.appspot.com/results/6337216930381824 New failing tests: http/tests/misc/last-modified-parsing.html Created attachment 223685 [details]
Archive of layout-test-results from webkit-ews-11 for mac-mountainlion-wk2
The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: webkit-ews-11 Port: mac-mountainlion-wk2 Platform: Mac OS X 10.8.5
Comment on attachment 223681 [details]
the patch
r=me
Landed in http://trac.webkit.org/changeset/163789 |