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r268269 - in /trunk/libbacktrace: ChangeLog Mak...
- From: vries at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Fri, 25 Jan 2019 14:39:59 -0000
- Subject: r268269 - in /trunk/libbacktrace: ChangeLog Mak...
Author: vries
Date: Fri Jan 25 14:39:58 2019
New Revision: 268269
URL: https://gcc.gnu.org/viewcvs?rev=268269&root=gcc&view=rev
Log:
[libbacktrace] Fix strrchr segfault
Currently, when running a libbacktrace testcase t with .gnu_debuglink to
t.debug, and t.debug having a .gnu_debugaltlink to t.alt.debug, a segfault
is triggered when calling strrchr with a NULL string from
elf_find_debugfile_by_debuglink. The NULL string originates from the elf_add
called for the .gnu_debugaltlink, which uses NULL as filename argument.
Fix this by using "" as filename argument instead.
2019-01-25 Tom de Vries <tdevries@suse.de>
* elf.c (elf_add): When handling .gnu_debugaltlink, call elf_add with
filename == "".
* Makefile.am (TESTS): Add btest_dwz_gnudebuglink.
* Makefile.in: Regenerate.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/Makefile.am
trunk/libbacktrace/Makefile.in
trunk/libbacktrace/elf.c