Alan Modra amodra@gmail.com
Thu Nov 4 12:44:00 GMT 2010

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Fixes a segfault when plugin_multiple_definition calls is_ir_dummy_bfd
with a NULL abfd.  Symbols can be defined in the absolute section,
which has a NULL owner.

	* plugin.c (is_ir_dummy_bfd): Don't segfault on NULL abfd.

Index: ld/plugin.c
===================================================================
RCS file: /cvs/src/src/ld/plugin.c,v
retrieving revision 1.5
diff -u -p -r1.5 plugin.c
--- ld/plugin.c	25 Oct 2010 06:22:50 -0000	1.5
+++ ld/plugin.c	4 Nov 2010 12:37:23 -0000
@@ -245,7 +245,11 @@ plugin_get_ir_dummy_bfd (const char *nam
 bfd_boolean
 is_ir_dummy_bfd (const bfd *abfd)
 {
-  size_t namlen = strlen (abfd->filename);
+  size_t namlen;
+
+  if (abfd == NULL)
+    return FALSE;
+  namlen = strlen (abfd->filename);
   if (namlen < IRONLY_SUFFIX_LEN)
     return FALSE;
   return !strcmp (abfd->filename + namlen - IRONLY_SUFFIX_LEN, IRONLY_SUFFIX);

-- 
Alan Modra
Australia Development Lab, IBM

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