GNU bug report logs - #64254
Bug in initialization with exotic locale

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Package: guile;

Reported by: Pavel Dovgalyuk <pavel.dovgalyuk <at> ispras.ru>

Date: Fri, 23 Jun 2023 15:31:02 UTC

Severity: normal

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Report forwarded to bug-guile <at> gnu.org:
bug#64254; Package guile. (Fri, 23 Jun 2023 15:31:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Pavel Dovgalyuk <pavel.dovgalyuk <at> ispras.ru>:
New bug report received and forwarded. Copy sent to bug-guile <at> gnu.org. (Fri, 23 Jun 2023 15:31:03 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Pavel Dovgalyuk <pavel.dovgalyuk <at> ispras.ru>
To: bug-guile <at> gnu.org
Subject: Bug in initialization with exotic locale
Date: Fri, 23 Jun 2023 10:48:38 +0300

The following call sequence can cause an exception, when the locale is 
not supported:

init_build_info -> scm_from_locale_string -> ... -> decoding_error

Then function scm_throw tries to access throw_var.
But this variable is not initialized yet, beacuse it is initialized in 
scm_init_throw, which will be called later.

Therefore access to throw_var in init_build_info causes segmentation fault.

How to reproduce:

podman run --net=host -it fedora:36 \
   /bin/sh -c 'dnf install -y gdb  glibc-langpack-ru && export 
LC_ALL=ru_RU.KOI8-R; exec gdb'


--
Pavel Dovgalyuk
This bug report was last modified 315 days ago.

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