X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/383e235b5f9f031f93af4795a1162909577a4d74..f1140c41e9297d14386ee18fbed7a9686d223024:/mp-mem.c

diff --git a/mp-mem.c b/mp-mem.c
index 7f9d630..f35fd58 100644
--- a/mp-mem.c
+++ b/mp-mem.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: mp-mem.c,v 1.3 2000/06/17 11:45:09 mdw Exp $
+ * $Id: mp-mem.c,v 1.4 2001/02/03 12:00:29 mdw Exp $
  *
  * Memory management for multiprecision numbers
  *
@@ -30,6 +30,10 @@
 /*----- Revision history --------------------------------------------------* 
  *
  * $Log: mp-mem.c,v $
+ * Revision 1.4  2001/02/03 12:00:29  mdw
+ * Now @mp_drop@ checks its argument is non-NULL before attempting to free
+ * it.  Note that the macro version @MP_DROP@ doesn't do this.
+ *
  * Revision 1.3  2000/06/17 11:45:09  mdw
  * Major memory management overhaul.  Added arena support.  Use the secure
  * arena for secret integers.  Replace and improve the MP management macros
@@ -191,7 +195,7 @@ mp *mp_copy(mp *m) { return MP_COPY(m); }
  *		If there are no more references, the integer is destroyed.
  */
 
-void mp_drop(mp *m) { MP_DROP(m); }
+void mp_drop(mp *m) { if (m) MP_DROP(m); }
 
 /* --- @mp_split@ --- *
  *