Revision: 41325
http://brlcad.svn.sourceforge.net/brlcad/?rev=41325&view=rev
Author: brlcad
Date: 2010-11-11 02:33:58 +0000 (Thu, 11 Nov 2010)
Log Message:
-----------
expand the documentation for bu_realloc() and how it relates to the boundary
cases where size in zero and/or the ptr is NULL with particular clarity that
NULL will still never be returned. fortunately, the standard allows the return
to be non-null even for zero sizes.
Modified Paths:
--------------
brlcad/trunk/include/bu.h
Modified: brlcad/trunk/include/bu.h
===================================================================
--- brlcad/trunk/include/bu.h 2010-11-11 02:32:30 UTC (rev 41324)
+++ brlcad/trunk/include/bu.h 2010-11-11 02:33:58 UTC (rev 41325)
@@ -3234,13 +3234,18 @@
*
* bu_malloc()/bu_free() compatible wrapper for realloc().
*
+ * this routine mimics the C99 standard behavior of realloc() except
+ * that NULL will never be returned. it will bomb if siz is zero and
+ * ptr is NULL. it will return a minimum allocation suitable for
+ * bu_free() if siz is zero and ptr is non-NULL.
+ *
* While the string 'str' is provided for the log messages, don't
- * disturb the mdb_str value, so that this storage allocation can be
+ * disturb the str value, so that this storage allocation can be
* tracked back to it's original creator.
*/
BU_EXPORT BU_EXTERN(genptr_t bu_realloc,
(genptr_t ptr,
- size_t cnt,
+ size_t siz,
const char *str));
/**
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