[webkit-changes] [WebKit/WebKit] aa62ce: BYTECODE_HELPER_ID LLint opcodes need look up for ...

Commit Queue noreply at github.com
Wed Dec 13 15:53:39 PST 2023


  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: aa62ce7b905994f278e4661ae4c7425ce400be01
      https://github.com/WebKit/WebKit/commit/aa62ce7b905994f278e4661ae4c7425ce400be01
  Author: Mark Lam <mark.lam at apple.com>
  Date:   2023-12-13 (Wed, 13 Dec 2023)

  Changed paths:
    M Source/JavaScriptCore/llint/LLIntOpcode.h
    M Source/JavaScriptCore/llint/LowLevelInterpreter.cpp

  Log Message:
  -----------
  BYTECODE_HELPER_ID LLint opcodes need look up for wide versions.
https://bugs.webkit.org/show_bug.cgi?id=266294
rdar://119563251

Reviewed by Justin Michaud.

FOR_EACH_BYTECODE_HELPER_ID was mistakenly lumped in with FOR_EACH_LLINT_NATIVE_HELPER, which
does not populate their entries in g_opcodeMapWide16 and g_opcodeMapWide32.  This patch fixes
that.

This was causing CLoop runs to crash on nullptr derefs on these non-initialized entries.

* Source/JavaScriptCore/llint/LLIntOpcode.h:
* Source/JavaScriptCore/llint/LowLevelInterpreter.cpp:
(JSC::CLoop::execute):

Canonical link: https://commits.webkit.org/272012@main




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