Bug 499180

Summary:	media-libs/libsdl-1.2.15-r4 randomly looses KEYUP events if an IME is active
Product:	Gentoo Linux	Reporter:	Rafał Mużyło <galtgendo>
Component:	[OLD] Library	Assignee:	Gentoo Games <games>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugzilla.libsdl.org/show_bug.cgi?id=2325
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	a cargo-cult patch that seems to fix the problem patch corrected for an obvious problem

Description Rafał Mużyło 2014-01-25 01:00:51 UTC

Created attachment 368658 [details, diff]
a cargo-cult patch that seems to fix the problem

Under certain conditions, SDL_PollEvents seems to be unexpectedly dropping KEYUP events if an IME is active.

The exact conditions are not clear - while it's related to SDL_EnableUNICODE flips, it doesn't happen every time. Both apps where I could trigger this problem (as an input freeze) are not in the tree.

The attached patch is a cargo-cult of a recent change in SDL2 made to a similar code block (https://hg.libsdl.org/SDL/rev/713c6a333c33).
I can't tell if this is a proper fix.

Upstream bug has been filed on 24.12, no response from upstream yet.

This is filed basically for *other* distros to take notice.

Perhaps someone from x11 herd could shed some light on specifics of interaction between XFilterEvent and xlib keyboard focus ?

Comment 1 Rafał Mużyło 2014-01-29 01:37:17 UTC

Created attachment 369020 [details, diff]
patch corrected for an obvious problem

As expected, the previous patch was somewhat broken in (in the hindsight) an obvious place.

That didn't affect the original problem, but broke other things.

This version has that new problem corrected.

Comment 2 Rafał Mużyło 2014-07-06 07:26:56 UTC

Upstream has accepted the patch...without any discussion. :sigh:

I can't say I'm really happy with that, but at least things seem to be working now.

Comment 3 Mr. Bones. (RETIRED) gentoo-dev

2015-05-12 19:57:19 UTC

added in libsdl-1.2.15-r9