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

[Cupertino Miranda]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c834917fda58d9e4cd72b67f7793e2f429ccce57

commit c834917fda58d9e4cd72b67f7793e2f429ccce57
Author: Cupertino Miranda <cmiranda@synopsys.com>
Date:   Fri Mar 2 17:33:48 2018 +0100

    [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:
---
 bfd/elf32-arc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bfd/elf32-arc.c b/bfd/elf32-arc.c
index f498668..3f60d09 100644
--- 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)