* [PATCH] Don't crash on unresolved weak symbol reference
@ 2010-05-19 15:04 Andreas Schwab
0 siblings, 0 replies; only message in thread
From: Andreas Schwab @ 2010-05-19 15:04 UTC (permalink / raw)
To: libc-hacker
2010-05-19 Andreas Schwab <schwab@redhat.com>
* elf/dl-runtime.c (_dl_fixup): Don't crash on unresolved weak
symbol reference.
---
elf/dl-runtime.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index a52120d..34b579f 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -144,7 +144,8 @@ _dl_fixup (
/* And now perhaps the relocation addend. */
value = elf_machine_plt_value (l, reloc, value);
- if (__builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0))
+ if (__builtin_expect (sym
+ && ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0))
value = ((DL_FIXUP_VALUE_TYPE (*) (void)) DL_FIXUP_VALUE_ADDR (value)) ();
/* Finally, fix up the plt itself. */
--
1.7.0.1
--
Andreas Schwab, schwab@redhat.com
GPG Key fingerprint = D4E8 DBE3 3813 BB5D FA84 5EC7 45C6 250E 6F00 984E
"And now for something completely different."
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2010-05-19 15:04 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-05-19 15:04 [PATCH] Don't crash on unresolved weak symbol reference Andreas Schwab
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).