GNU bug report logs - #40737
Segfault in arm gcc7, thumb2 builroot, with arm patch

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Message #25 received at 40737 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: dsmich <at> roadrunner.com
Cc: "'40737 <at> debbugs.gnu.org'" <40737 <at> debbugs.gnu.org>
Subject: Re: bug#40737: Segfault in arm gcc7, thumb2 builroot, with arm patch
Date: Thu, 18 Jun 2020 16:54:21 +0200

Hi,

dsmich <at> roadrunner.com skribis:

> I'm still seeing segfaults on rasbian on an rpi3. Have not tried
> buildroot yet.
>
> That patch *did* fix a boatload of errors on arm, but this segfault is
> an unrelated problem I think. Only happens on arm though.
>
> Here is a way to reproduce:
>
> In the test-suite/standalone dir:
> while GUILE_JIT_THRESHOLD=0 make TESTS=test-language check-TESTS; do
> :;done
>
> And then:
> ../../meta/uninstalled-env ../../libtool --mode=execute gdb
> ../../libguile/guile core
>
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 0x76f505cc in scm_is_string (x=0x0) at strings.h:293
> 293 return SCM_HAS_TYP7 (x, scm_tc7_string);
> [Current thread is 1 (Thread 0x76fe6010 (LWP 21616))]
> (gdb) bt
> #0 0x76f505cc in scm_is_string (x=0x0) at strings.h:293
> #1 scm_string_to_symbol (string=0x0) at symbols.c:361
> #2 0x722df4cc in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt
> stack?)

OK.

On IRC you mentioned that this does not happen with
GUILE_JIT_THRESHOLD=-1, right?

Thanks,
Ludo’.

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