X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/mLib/blobdiff_plain/dcda594451ecd4d8ba699da3e4cc3c723f31b538..0ddebb8f377a5daa1f546f18a956db99c54685ca:/assoc.c

diff --git a/assoc.c b/assoc.c
index 26fe2c9..764a820 100644
--- a/assoc.c
+++ b/assoc.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: assoc.c,v 1.1 2001/01/20 11:50:58 mdw Exp $
+ * $Id: assoc.c,v 1.4 2004/04/08 01:36:11 mdw Exp $
  *
  * Assocation tables
  *
@@ -27,15 +27,6 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: assoc.c,v $
- * Revision 1.1  2001/01/20 11:50:58  mdw
- * Hash tables indexed by atoms, to avoid expense of hashing keys on each
- * lookup, and to reduce storage used by key texts.
- *
- */
-
 /*----- Header files ------------------------------------------------------*/
 
 #include "alloc.h"
@@ -77,6 +68,8 @@ void assoc_destroy(assoc_table *t)
   for (;;) {
     hash_base *p;
     HASH_NEXT(&i, p);
+    if (!p)
+      break;
     x_free(t->t.a, p);
   }
   hash_destroy(&t->t);
@@ -103,7 +96,7 @@ void assoc_destroy(assoc_table *t)
 
 void *assoc_find(assoc_table *t, atom *a, size_t sz, unsigned *f)
 {
-  hash_base **bin = HASH_BIN(&t->t, a->b.b.hash), **p;
+  hash_base **bin = HASH_BIN(&t->t, ATOM_HASH(a)), **p;
   assoc_base *q;
 
   /* --- Try to find the association --- */
@@ -127,6 +120,7 @@ void *assoc_find(assoc_table *t, atom *a, size_t sz, unsigned *f)
   /* --- Make a new assoication --- */
 
   q = x_alloc(t->t.a, sz);
+  q->a = a;
   q->b.next = *bin;
   q->b.hash = ATOM_HASH(a);
   *bin = &q->b;