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Make with_x11_visual take ID instead of a pointer

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At the moment, the with_x11_visual function takes a pointer and
immediately dereferences it to get the visual info inside. As it is safe
to pass a null pointer to this function, it is unsound. This commit
replaces the pointer parameter with a visual ID, and then uses that ID
to look up the actual visual under
the X11 setup. As this is what was already practically happening before,
this change shouldn't cause any performance downgrades.

This is a breaking change, but it's done in the name of soundness so it
should be okay. It should be trivial for end users to accommodate it,
as it's just a matter of getting the visual ID from the pointer to the
visual before passing it in.

Signed-off-by: John Nunley <dev@notgull.net>
This commit is contained in:
John Nunley 2023-08-05 14:58:23 -07:00 • committed by GitHub
parent 8100a6a584
commit 584aab4cd0
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5 changed files with 56 additions and 31 deletions
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CHANGELOG.md
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@ -58,6 +58,7 @@ And please only add new entries to the top of this list, right below the `# Unre
- **Breaking** `RedrawEventsCleared` removed ([#2900](https://github.com/rust-windowing/winit/issues/2900))
- **Breaking** `MainEventsCleared` removed ([#2900](https://github.com/rust-windowing/winit/issues/2900))
- Added `AboutToWait` event which is emitted when the event loop is about to block and wait for new events ([#2900](https://github.com/rust-windowing/winit/issues/2900))
- **Breaking:** `with_x11_visual` now takes the visual ID instead of the bare pointer.
# 0.29.0-beta.0