[ARC] Improved robustness. Return FALSE in case of NULL pointer.

bfd/
2018-03-01  Cupertino Miranda <cmiranda@synopsys.com>

	* elf32-arc.c (elf_arc_finish_dynamic_symbol) Return FALSE in case
	arc_htab is NULL.

diff --git a/bfd/elf32-arc.c b/bfd/elf32-arc.c
index f498668..3f60d09 100644 (file)
--- a/bfd/elf32-arc.c
+++ b/bfd/elf32-arc.c
@@ -2436,6 +2436,9 @@ elf_arc_finish_dynamic_symbol (bfd * output_bfd,
     {
       struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
 
+      if (arc_htab == NULL)
+       return FALSE;
+
       if (h->dynindx == -1
          || (h->root.type != bfd_link_hash_defined
              && h->root.type != bfd_link_hash_defweak)