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[binutils-gdb] Fixed issue with NULL pointer access on header var.


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7763838e991e4d17a24c4214db5144eefd515543

commit 7763838e991e4d17a24c4214db5144eefd515543
Author: Cupertino Miranda <cmiranda@synopsys.com>
Date:   Fri Aug 26 22:15:23 2016 +0200

    Fixed issue with NULL pointer access on header var.
    
    Variable "header" in function is set conditionally, but was accessed without
    verifying if pointer was NULL.
    
    opcodes/ChangeLog:
    
        Cupertino Miranda  <cmiranda@synopsys.com>
    	* opcodes/arc-dis.c (print_insn_arc): Changed.

Diff:
---
 opcodes/ChangeLog | 4 ++++
 opcodes/arc-dis.c | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 9e41bc5..fdb78af 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2016-08-30  Cupertino Miranda  <cmiranda@synopsys.com>
+
+	* opcodes/arc-dis.c (print_insn_arc): Changed.
+
 2016-08-26  Jose E. Marchesi  <jose.marchesi@oracle.com>
 
 	* sparc-opc.c (sparc_opcodes): Fix typo in opcode, camellia_fi ->
diff --git a/opcodes/arc-dis.c b/opcodes/arc-dis.c
index 73d648d..d69a01e 100644
--- a/opcodes/arc-dis.c
+++ b/opcodes/arc-dis.c
@@ -938,7 +938,10 @@ print_insn_arc (bfd_vma memaddr,
     case bfd_mach_arc_arcv2:
     default:
       isa_mask = ARC_OPCODE_ARCv2EM;
-      if ((header->e_flags & EF_ARC_MACH_MSK) == EF_ARC_CPU_ARCV2HS)
+      /* TODO: Perhaps remove defitinion of header since it is only used at
+         this location.  */
+      if (header != NULL
+	  && (header->e_flags & EF_ARC_MACH_MSK) == EF_ARC_CPU_ARCV2HS)
 	{
 	  isa_mask = ARC_OPCODE_ARCv2HS;
 	  /* FPU instructions are not extensions for HS.  */


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