Bug#1118780: gtk4: Mipmap tests fail 16/32-bit pixel format conversions due to memory alignment issues

[Simon McVittie]

Control: severity -1 normal

On Sat, 25 Oct 2025 at 13:50:54 +0200, Gregor Riepl wrote:
>The gtk4 package build currently fails on architectures with strict memory alignment rules, namely sparc64.

sparc64 is not a release architecture and has not been for many years 
(perhaps not ever, I don't remember). If the build succeeds on release 
architectures then this is not RC.

     smcv