[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[fw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

Florian Weimer  changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |FIXED

--- Comment #37 from Florian Weimer  ---
Backported to 13, the only impacted release.

[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

--- Comment #36 from CVS Commits  ---
The releases/gcc-13 branch has been updated by Florian Weimer 
:

https://gcc.gnu.org/g:7302f8a2fa2f95252b32de2dc826591e75230662

commit r13-7582-g7302f8a2fa2f95252b32de2dc826591e75230662
Author: Florian Weimer 
Date:   Tue Jun 6 11:01:07 2023 +0200

libgcc: Fix eh_frame fast path in find_fde_tail

The eh_frame value is only used by linear_search_fdes, not the binary
search directly in find_fde_tail, so the bug is not immediately
apparent with most programs.

Fixes commit e724b0480bfa5ec04f39be8c7290330b495c59de ("libgcc:
Special-case BFD ld unwind table encodings in find_fde_tail").

libgcc/

PR libgcc/109712
* unwind-dw2-fde-dip.c (find_fde_tail): Correct fast path for
parsing eh_frame.

(cherry picked from commit 49310a993308492348119f4033e4db0bda4fe46a)

[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[fw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

--- Comment #35 from Florian Weimer  ---
Backport posted, along with the warning fix:

[PATCH releases/gcc-13 1/2] libgcc: Fix eh_frame fast path in find_fde_tail


[PATCH releases/gcc-13 2/2] libgcc: Fix -Wint-conversion warning in
find_fde_tail

[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

--- Comment #34 from Richard Biener  ---
You have until Thursday for the backport which is when we want to do 13.2 RC1

[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[fw at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

--- Comment #33 from Florian Weimer  ---
(In reply to Andrew Pinski from comment #32)
> (In reply to Florian Weimer from comment #31)
> > Will propose a backport to 13 in ~2 weeks.
> 
> Any news on the backport? There is aim to release GCC 13.2.0 at the end of
> July.

I managed to produce a warning regression. I should have time this week to fix
that, and do the backport this week.

[Bug libgcc/109712] [13 Regression] Segmentation fault in linear_search_fdes

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109712

--- Comment #32 from Andrew Pinski  ---
(In reply to Florian Weimer from comment #31)
> Will propose a backport to 13 in ~2 weeks.

Any news on the backport? There is aim to release GCC 13.2.0 at the end of
July.