[webkit-changes] [WebKit/WebKit] 7536af: [bmalloc] Fix misalignment issue for seedPtr in TZ...

[Yijia Huang]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 7536af6d67362af9f42ef97b140752ee0a107c38
      https://github.com/WebKit/WebKit/commit/7536af6d67362af9f42ef97b140752ee0a107c38
  Author: Yijia Huang <yijia_huang at apple.com>
  Date:   2025-01-07 (Tue, 07 Jan 2025)

  Changed paths:
    M Source/bmalloc/bmalloc/TZoneHeapManager.cpp

  Log Message:
  -----------
  [bmalloc] Fix misalignment issue for seedPtr in TZoneHeapManager::init()
https://bugs.webkit.org/show_bug.cgi?id=285544
rdar://142489488

Reviewed by Yusuke Suzuki.

The 8-byte pointer `seedPtr` in TZoneHeapManager::init() is used
to copy 8 bytes from `seed` each time. This patch ensures that `seed`
is 8-byte aligned to mitigate the misalignment issue and prevent
undefined behavior during pointer dereferencing.

* Source/bmalloc/bmalloc/TZoneHeapManager.cpp:
(bmalloc::api::TZoneHeapManager::init):

Canonical link: https://commits.webkit.org/288562@main



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