X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Flib%2Fstddef.h;h=4e74fa6178e80b155a776b77b2c90d3d9e7d1b4b;hb=59f738d500f51ffc5f487344865b8bed69c26281;hp=836b8f21c1dfc8dab191894c4572fb97d7e7a45f;hpb=f2f8875638593bd5365cfd6a5ba7c9578e52322f;p=pintos-anon

diff --git a/src/lib/stddef.h b/src/lib/stddef.h
index 836b8f2..4e74fa6 100644
--- a/src/lib/stddef.h
+++ b/src/lib/stddef.h
@@ -1,9 +1,12 @@
-#ifndef LIB_STDDEF_H
-#define LIB_STDDEF_H
+#ifndef __LIB_STDDEF_H
+#define __LIB_STDDEF_H
 
 #define NULL ((void *) 0)
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
-typedef int ptrdiff_t;
-typedef unsigned int size_t;
+
+/* GCC predefines the types we need for ptrdiff_t and size_t,
+   so that we don't have to guess. */
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+typedef __SIZE_TYPE__ size_t;
 
 #endif /* lib/stddef.h */