svn commit: r314101 - head/sys/sys
Andriy Gapon
avg at FreeBSD.org
Wed Feb 22 17:20:19 UTC 2017
Author: avg
Date: Wed Feb 22 17:20:18 2017
New Revision: 314101
URL: https://svnweb.freebsd.org/changeset/base/314101
Log:
don't use C99 static array indices with older GCC versions
For example, the FreeBSD GCC (4.2.1) has a spotty support for that
feature. If the static keyword is used with an unnamed array parameter
in a function declaration, then the compilation fails with:
error: static or type qualifiers in abstract declarator
The feature does work if the parameter is named.
So, the restriction introduced in this commit can be removed when all
affected function prototypes have the workaround.
MFC after: 1 week
Sponsored by: Panzura
Modified:
head/sys/sys/cdefs.h
Modified: head/sys/sys/cdefs.h
==============================================================================
--- head/sys/sys/cdefs.h Wed Feb 22 17:13:00 2017 (r314100)
+++ head/sys/sys/cdefs.h Wed Feb 22 17:20:18 2017 (r314101)
@@ -349,6 +349,7 @@
* void bar(int myArray[__min_size(10)]);
*/
#if !defined(__cplusplus) && \
+ (defined(__clang__) || __GNUC_PREREQ__(4, 6)) && \
(!defined(__STDC_VERSION__) || (__STDC_VERSION__ >= 199901))
#define __min_size(x) static (x)
#else
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