Bug 165321 - Stop nulling out the CodeBlock spot inside the call frame inside WebAssembly
Summary: Stop nulling out the CodeBlock spot inside the call frame inside WebAssembly
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Saam Barati
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2016-12-02 11:44 PST by Saam Barati
Modified: 2017-03-13 09:44 PDT (History)
11 users (show)

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Description Saam Barati 2016-12-02 11:44:34 PST 
A lot of places interpreter non-zero CodeBlock bits to mean a valid CodeBlock. When I do wasm unwinding, I'll need to monitor the code that touches this to make sure it refers to the callee before the CodeBlock to test for a wasm frame. Until then, we'll store zero into that slot just to be safe.