EcmaScript 5.1 specifies that during for-in enumeration newly added properties may or may not be visited during the current enumeration. Specifically, in section 12.6.4 the spec states: "If new properties are added to the object being enumerated during enumeration, the newly added properties are not guaranteed to be visited in the active enumeration." The sputnik/Implementation_Diagnostics/S12.6.4_D1.html layout test is from before sputnik was added to the test262 suite. I believe it has since been removed, so it would probably be okay to remove it from our layout test suite.
Created attachment 235049 [details] Patch
Comment on attachment 235049 [details] Patch Is it part of test262?
(In reply to comment #2) > (From update of attachment 235049 [details]) > Is it part of test262? I don't think it is any more. I have a patch that breaks this test but the section 12 test262 tests pass.
(In reply to comment #3) > (In reply to comment #2) > > (From update of attachment 235049 [details] [details]) > > Is it part of test262? > > I don't think it is any more. I have a patch that breaks this test but the section 12 test262 tests pass. I guess it might never have been added to test262 though...
Fix landed in http://trac.webkit.org/changeset/171189.
Comment on attachment 235049 [details] Patch Clearing review flag.