[svn-commits] twilson: branch 1.10 r328717 - in /branches/1.10: ./ include/asterisk/ tests/

[SVN commits to the Digium repositories]

Author: twilson
Date: Mon Jul 18 20:55:32 2011
New Revision: 328717

URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=328717
Log:
Merged revisions 328716 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.8

........
  r328716 | twilson | 2011-07-18 20:35:53 -0500 (Mon, 18 Jul 2011) | 7 lines
  
  Make AST_LIST_REMOVE safer
  
  AST_LIST_REMOVE shouldn't modify the element passed in if it isn't found. This
  commit also adds linked list unit tests.
  
  Review: https://reviewboard.asterisk.org/r/1321/
........

Added:
    branches/1.10/tests/test_linkedlists.c
      - copied unchanged from r328716, branches/1.8/tests/test_linkedlists.c
Modified:
    branches/1.10/   (props changed)
    branches/1.10/include/asterisk/linkedlists.h

Propchange: branches/1.10/
------------------------------------------------------------------------------
Binary property 'branch-1.8-merged' - no diff available.

Modified: branches/1.10/include/asterisk/linkedlists.h
URL: http://svnview.digium.com/svn/asterisk/branches/1.10/include/asterisk/linkedlists.h?view=diff&rev=328717&r1=328716&r2=328717
==============================================================================
--- branches/1.10/include/asterisk/linkedlists.h (original)
+++ branches/1.10/include/asterisk/linkedlists.h Mon Jul 18 20:55:32 2011
@@ -838,7 +838,10 @@
  */
 #define AST_LIST_REMOVE(head, elm, field) ({			        \
 	__typeof(elm) __res = NULL; \
-	if ((head)->first == (elm)) {					\
+	__typeof(elm) __tmp = elm; \
+	if (!__tmp) { \
+		__res = NULL; \
+	} else if ((head)->first == (elm)) {					\
 		__res = (head)->first;                      \
 		(head)->first = (elm)->field.next;			\
 		if ((head)->last == (elm))			\
@@ -854,7 +857,9 @@
 				(head)->last = curelm;				\
 		} \
 	}								\
-	(elm)->field.next = NULL;                                       \
+	if (__res) { \
+		(__res)->field.next = NULL; \
+	} \
 	(__res); \
 })