[Bug 263845] graphics/libglvnd: Library compiled in ARM mode, but executes in Thumb mode, crashing programs on FreeBSD 13 armv7 with SIGILL
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Date: Tue, 31 May 2022 17:20:19 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263845
Robert Clausecker <fuz@fuz.su> changed:
What |Removed |Added
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CC| |x11@FreeBSD.org
Attachment #234353| |maintainer-approval?(x11@Fr
Flags| |eeBSD.org)
--- Comment #4 from Robert Clausecker <fuz@fuz.su> ---
Created attachment 234353
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=234353&action=edit
graphics/libglvnd: fix on armv7
The .thumb_func directive does not switch to thumb mode in clang's
integrated assembler. This causes the code to be miscompiled in that
it is generated as ARM code but the symbols are tagged as thumb. The
resulting library is unusable. Every call into it crashes.
Add a patch to fix the behaviour and bump PORTREVISION so consumers
get the updated library.
Tested with Poudriere on armv7 FreeBSD 13.
Please MFH if possible.
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