[v8-dev] Re: Issue 3183 in v8: "Object # has no method push" on Array after deoptimization

Wed, 26 Feb 2014 13:03:54 -0800


Comment #5 on issue 3183 by [email protected]: "Object #<Object> has no method push" on Array after deoptimization
http://code.google.com/p/v8/issues/detail?id=3183

The related-deopt.txt is the one we are looking for

    0xbff3ad04: [top + 8] <- 0x29f1ac09 ; ecx 0x29f1ac09 <String[4]: push>
0xbff3ad00: [top + 4] <- 0x52d73251 ; [sp + 24] 0x52d73251 <a o with map 0x34a36431> 0xbff3acfc: [top + 0] <- 0x52d750c5 ; ebx 0x52d750c5 <an Object with map 0x34acd601>

top + 4 should have contained an Array object, but instead it contains wrong value.

So it was $ws.proto.ParserAbstract.$ws.proto.Abstract.extend.$constructor that was misoptimized.

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