Bug#1133539: libwx-perl: ftbfs with GCC-16

[Roland Rosenfeld]

On Di, 08 Sep 2026, Niko Tyni wrote:

> This fails on sid as well now that GCC-16 is the default.
>
> It seems to be an optimization issue. It works for me on sid/amd64
> with DEB_BUILD_OPTIONS=noopt, and also with the attached targeted lower
> optimization level.
> 
> This is at best a workaround of course. I didn't get further yet, happy
> if somebody else wants to pick this up.

I can confirm that the attached workaround patch solves this issue for
me on amd64 as well as on s390x.
I just tested this while trying to fix #1148235 and #1148236 (WebView
no longer available on big endian).
After applying your patch these builds on s390x without issues.

I'd suggest that I team-upload libwx-perl with your GCC-16 workaround
as well as a fix for #1148236 tomorrow (when the new
libalien-wxwidgets-perl is available everywhere).

I tried this out at https://salsa.debian.org/roland/libwx-perl
(pipeline will fail until libalien-wxwidgets-perl 0.69+dfsg-9 is
available).

I closed the bug in changelog, but maybe we should reopen it
afterwards and downgrade severity to normal to remember that we have
to replace the workaround by a better solution...

@Niko: Do you think that this is an acceptable way to go?

Greetings
Roland