RESOLVED FIXED 204866
Fix a broken assertion in GetByStatus::computeForStubInfoWithoutExitSiteFeedback(). 
https://bugs.webkit.org/show_bug.cgi?id=204866
Summary Fix a broken assertion in GetByStatus::computeForStubInfoWithoutExitSiteFeedb...
Mark Lam
Reported 2019-12-04 17:19:18 PST
The assertion wrong assumes that access.offset() cannot be invalid unless the access.type() is a Miss. However, if the AccessCase is a Custom value or accessor, the offset is always invalid. We'll fix the assertion.
Attachments
proposed patch. (2.88 KB, patch)
2019-12-04 17:25 PST, Mark Lam 		saam: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Mark Lam
Comment 1 2019-12-04 17:25:01 PST
Created attachment 384868 [details] proposed patch.
Saam Barati
Comment 2 2019-12-04 17:28:29 PST
Comment on attachment 384868 [details] proposed patch. View in context: https://bugs.webkit.org/attachment.cgi?id=384868&action=review > Source/JavaScriptCore/bytecode/GetByStatus.cpp:295 > + ASSERT(access.isCustom() || ((AccessCase::Miss == access.type()) == (access.offset() == invalidOffset))); you could also do: ASSERT(((AccessCase::Miss == access.type() || access.isCustom()) == (access.offset() == invalidOffset)));
Mark Lam
Comment 3 2019-12-04 17:38:06 PST
(In reply to Saam Barati from comment #2) > you could also do: > ASSERT(((AccessCase::Miss == access.type() || access.isCustom()) == > (access.offset() == invalidOffset))); Thanks for the review. I've applied this change. Landed in r253136: <http://trac.webkit.org/r253136>.
Radar WebKit Bug Importer
Comment 4 2019-12-04 17:39:22 PST
<rdar://problem/57648868>
Note You need to log in before you can comment on or make changes to this bug.