diff options
| author | Tom de Vries <tdevries@suse.de> | 2019-01-25 14:39:58 +0000 |
|---|---|---|
| committer | Tom de Vries <vries@gcc.gnu.org> | 2019-01-25 14:39:58 +0000 |
| commit | c75795fa1dc29716f519ca6d1c8cccb67d0d2062 (patch) | |
| tree | 4a320ed1ce1aa49329041a5d06027e300d24ee86 /libbacktrace/elf.c | |
| parent | 37ab491dcee76e83ce32506632810b04a6045d5e (diff) | |
[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.
From-SVN: r268269
Diffstat (limited to 'libbacktrace/elf.c')
| -rw-r--r-- | libbacktrace/elf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libbacktrace/elf.c b/libbacktrace/elf.c index 01cf6f9cff7..632477f3099 100644 --- a/libbacktrace/elf.c +++ b/libbacktrace/elf.c @@ -3080,7 +3080,7 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, if (debugaltlink_view_valid) backtrace_release_view (state, &debugaltlink_view, error_callback, data); - ret = elf_add (state, NULL, d, base_address, error_callback, data, + ret = elf_add (state, "", d, base_address, error_callback, data, fileline_fn, found_sym, found_dwarf, NULL, 0, 1, NULL, 0); if (ret < 0) |