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-rw-r--r--sys/sys/types.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/sys/types.h b/sys/sys/types.h
index 8e8d48afb8b..ceb7de5cd45 100644
--- a/sys/sys/types.h
+++ b/sys/sys/types.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: types.h,v 1.43 2015/07/20 23:55:27 uebayasi Exp $ */
+/* $OpenBSD: types.h,v 1.44 2015/09/04 23:47:09 daniel Exp $ */
/* $NetBSD: types.h,v 1.29 1996/11/15 22:48:25 jtc Exp $ */
/*-
@@ -247,8 +247,9 @@ struct uio;
#endif
#ifdef _KERNEL
-#if (defined(__GNUC__) && __GNUC__ >= 3) || defined(__PCC__)
-/* Support for _C99: type _Bool is already built-in. */
+#if defined(__GNUC__) || \
+ (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901)
+/* Support for C99: type _Bool is already built-in. */
#define false 0
#define true 1