[PATCH] Don't crash on unresolved weak symbol reference

[Andreas Schwab]

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."