Ensure next_uid() can never return 0.

d5082158 · Andy · Simon Kelley · 3f7483e8 · d5082158
Commit d5082158 authored Mar 17, 2014 by Andy Committed by Simon Kelley Mar 17, 2014
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Showing with 4 additions and 2 deletions

src/cache.c src/cache.c +4 -2

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--- a/src/cache.c
+++ b/src/cache.c
@@ -74,13 +74,15 @@ static void cache_hash(struct crec *crecp);

 static unsigned int next_uid(void)
 {
-  static unsigned int uid = 1;
+  static unsigned int uid = 0;

+  uid++;
+  
  /* uid == 0 used to indicate CNAME to interface name. */
  if (uid == 0)
    uid++;
  
-  return uid++;
+  return uid;
 }

 void cache_init(void)