From: Bernhard Heckel <bernhard.heckel@intel.com>
Date: Tue, 7 Jun 2016 11:36:05 +0000 (+0200)
Subject: Frame static link: Handle null pointer.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2091da296fd563f62d856dcb5a049a63484ed65e;p=binutils-gdb.git

Frame static link: Handle null pointer.

2016-06-07  Bernhard Heckel  <bernhard.heckel@intel.com>

gdb/Changelog:
	* findvar.c (follow_static_link): Check for valid pointer.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 01cc7708aa9..bd2d5d27063 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2016-06-07  Bernhard Heckel  <bernhard.heckel@intel.com>
+
+	* findvar.c (follow_static_link): Check for valid pointer.
+
 2016-06-06  Simon Marchi  <simon.marchi@ericsson.com>
 
 	* NEWS: Mention the new fields in =record-started.
diff --git a/gdb/findvar.c b/gdb/findvar.c
index a39d89788e8..cfb3e382258 100644
--- a/gdb/findvar.c
+++ b/gdb/findvar.c
@@ -435,6 +435,7 @@ follow_static_link (struct frame_info *frame,
       /* If we don't know how to compute FRAME's base address, don't give up:
 	 maybe the frame we are looking for is upper in the stace frame.  */
       if (framefunc != NULL
+	  && SYMBOL_BLOCK_OPS (framefunc) != NULL
 	  && SYMBOL_BLOCK_OPS (framefunc)->get_frame_base != NULL
 	  && (SYMBOL_BLOCK_OPS (framefunc)->get_frame_base (framefunc, frame)
 	      == upper_frame_base))