X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fheap.h;h=f2dc8697c0ee676a0067053a8c93a5ca60654793;hb=3a7fba81ceae5b049d0f7d671e9e3c3c43bbf703;hp=7644356b73155fa5c702b5a572c76fa72edc0dd6;hpb=b9dcb1c23a48b9db5444b9f10aac0748b83898ad;p=pspp-builds.git

diff --git a/src/heap.h b/src/heap.h
index 7644356b..f2dc8697 100644
--- a/src/heap.h
+++ b/src/heap.h
@@ -23,6 +23,8 @@
 /* This module implements a priority queue as a heap as described in
    Knuth 5.2.3.  This is a first-in-smallest-out priority queue. */
 
+#include <stddef.h>
+
 /* One element of a heap. */
 struct heap_elem
   {