[webkit-changes] [WebKit/WebKit] 281f71: [WPE] WPE Platform: fix nullptr deref without IME ...

[Christian Meissl]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 281f713ebdaf39ebecc6291ef87a01440577441b
      https://github.com/WebKit/WebKit/commit/281f713ebdaf39ebecc6291ef87a01440577441b
  Author: Christian Meissl <meissl.christian at gmail.com>
  Date:   2025-02-26 (Wed, 26 Feb 2025)

  Changed paths:
    M Source/WebKit/WPEPlatform/wpe/WPEDisplay.cpp

  Log Message:
  -----------
  [WPE] WPE Platform: fix nullptr deref without IME support
https://bugs.webkit.org/show_bug.cgi?id=288582

Reviewed by Carlos Garcia Campos.

While `wpeDisplayCreateInputMethodContext` already returns
a dummy input context with `wpeInputMethodContextNoneNew`
in case the display does not support IME at all it does not
test for nullptr of the returned context from the display.

The wayland display evaluates the presence of an IME context
at runtime depending on the actual supported wayland protocols.
In case the compositor does not announce any IME support a
nullptr will be returned, leading to a nullptr dereference later.

* Source/WebKit/WPEPlatform/wpe/WPEDisplay.cpp:
(wpeDisplayCreateInputMethodContext):

Canonical link: https://commits.webkit.org/291104@main



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