diff mbox

[for-2.9,2/6] disas/i386: Avoid NULL pointer dereference in error case

Message ID 1488556233-31246-3-git-send-email-peter.maydell@linaro.org
State New
Headers show

Commit Message

Peter Maydell March 3, 2017, 3:50 p.m. UTC 
In a code path where we hit an internal disassembler error, execution
would subsequently attempt to dereference a NULL pointer.  This
should never happen, but avoid the crash.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 disas/i386.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/disas/i386.c b/disas/i386.c
index 07f871f..f1e376c 100644
--- a/disas/i386.c
+++ b/disas/i386.c
@@ -4043,7 +4043,7 @@  print_insn (bfd_vma pc, disassemble_info *info)
 	    }
 	}
 
-      if (putop (dp->name, sizeflag) == 0)
+      if (dp->name != NULL && putop (dp->name, sizeflag) == 0)
         {
 	  for (i = 0; i < MAX_OPERANDS; ++i)
 	    {