Bug 191058

Summary: Reproducible RELEASE_ASSERT(materialization->properties().size() - 2 == table->scopeSize()) in FTLOperations.cpp
Product: WebKit Reporter: zhunkibatu
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Severity: Normal CC: keith_miller, rmorisset, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: PC   
OS: Linux   

Description zhunkibatu 2018-10-30 01:24:41 PDT
the following poc triggered an assertion failure:

RELEASE_ASSERT(materialization->properties().size() - 2 == table->scopeSize());

at ../../Source/JavaScriptCore/ftl/FTLOperations.cpp:236


function f(x,x,x,x){eval;}

for(var i=0;i<100000;i++){f();}

Comment 1 Alexey Proskuryakov 2018-10-30 14:48:27 PDT
I can reproduce with latest shipping Safari.
Comment 2 Radar WebKit Bug Importer 2018-10-30 14:48:52 PDT
Comment 3 Keith Miller 2018-12-10 14:40:03 PST
I can't reproduce this on ToT.
Comment 4 Robin Morisset 2019-02-15 16:29:26 PST
I could not reproduce it either, and I tried it on several versions of Safari going back all the way to March 2018.. not sure what is going on.