[SCM] gbenson/rtld-probes: 1) lm_info can be NULL. 2) Size was wrong.

[gary@sourceware.org]

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- Log -----------------------------------------------------------------
commit bf30bd84f8d2f12d1d7a5695aa48929808fae88f
Author: Gary Benson <gbenson@redhat.com>
Date:   Fri May 17 11:35:32 2013 +0100

    1) lm_info can be NULL. 2) Size was wrong.

-----------------------------------------------------------------------

Summary of changes:
 gdb/solib-svr4.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)

First 500 lines of diff:
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
index 6b4bdb0..8de10e4 100644
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -1086,7 +1086,6 @@ svr4_free_library_list (void *p_list)
 static struct so_list *
 svr4_copy_library_list (struct so_list *src)
 {
-  struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
   struct so_list *dst = NULL;
   struct so_list **link = &dst;
 
@@ -1098,8 +1097,11 @@ svr4_copy_library_list (struct so_list *src)
 
       memcpy (new, src, sizeof (struct so_list));
 
-      new->lm_info = xmalloc (lmo->link_map_size);
-      memcpy (new->lm_info, src->lm_info, lmo->link_map_size);
+      if (src->lm_info != NULL)
+	{
+	  new->lm_info = xmalloc (sizeof (struct lm_info));
+	  memcpy (new->lm_info, src->lm_info, sizeof (struct lm_info));
+	}
 
       new->next = NULL;
       *link = new;


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