zbarcam-qt dumps core

[callegar]

I see it on manjaro and arch (it is ultimately the same binary on the two), with version 0.23.93.

It is sufficient to start the application to have it dump core.

> zbarcam-qt
Segmentation fault (core dumped)

The gtk client works.

[callegar]

This seems to be well know. Apparently some linux distro disable building qt altogether (https://lists.nongnu.org/archive/html/guix-commits/2025-01/msg05598.html).

[callegar]

Important note: when run as a wayland application. In X11 mode it works.

[callegar]

I think that you need the equivalent of Commit 86e15ee for zbarcam-qt.

[MorsMortium]

QT_QPA_PLATFORM=xcb zbarcam-qt works on wayland

[callegar]

QT_QPA_PLATFORM=xcb zbarcam-qt works on wayland

Indeed, as noted above the issue is when trying to run zbarcam-qt as a wayland application. But if the app cannot use wayland, it should probably default to X11, and not require an explicit env setting to be forced to run in X11 mode.

[MorsMortium]

True, it can also set the env var for itself, I've seen that once
char env[] = "QT_QPA_PLATFORM=xcb"; putenv(env);
Was just writing for those that couldn't find how to force the app, until it gets fixed.