From: Karel Zak <kzak@redhat.com>
Date: Fri, 22 Jan 2021 12:28:02 +0000 (+0100)
Subject: build-sys: add restrict keyword fallback
X-Git-Tag: v2.37-rc1~168
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7397f2c1f955569743c68c900ca873fd9e211833;p=thirdparty%2Futil-linux.git

build-sys: add restrict keyword fallback

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/include/c.h b/include/c.h
index ae08131099..6b742512b3 100644
--- a/include/c.h
+++ b/include/c.h
@@ -64,6 +64,21 @@
 # define ignore_result(x) ((void) (x))
 #endif /* !__GNUC__ */
 
+
+/* "restrict" keyword fallback */
+#if __STDC__ != 1
+# define restrict __restrict /* use implementation __ format */
+#else
+# ifndef __STDC_VERSION__
+#  define restrict __restrict /* use implementation __ format */
+# else
+#  if __STDC_VERSION__ < 199901L
+#   define restrict __restrict /* use implementation __ format */
+#  endif
+# endif
+#endif
+
+
 /*
  * It evaluates to 1 if the attribute/feature is supported by the current
  * compilation target. Fallback for old compilers.