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[PATCH 1/6] Make _Static_assert() work with GCC in older C++ standards.
- From: Sebastian Huber <sebastian dot huber at embedded-brains dot de>
- To: newlib at sourceware dot org
- Date: Fri, 27 Jul 2018 09:40:37 +0200
- Subject: [PATCH 1/6] Make _Static_assert() work with GCC in older C++ standards.
From: "ed@FreeBSD.org" <ed@FreeBSD.org>
GCC only activates C11 keywords in C mode, not C++ mode. This means
that when targeting an older C++ standard, we cannot fall back to using
_Static_assert(). In this case, do define _Static_assert() as a macro
that uses a typedef'ed array.
Discussed in: r322875 commit thread
Reported by: Mark MIllard
MFC after: 1 month
---
newlib/libc/include/sys/cdefs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h
index b3f8d1965..49be9e062 100644
--- a/newlib/libc/include/sys/cdefs.h
+++ b/newlib/libc/include/sys/cdefs.h
@@ -314,7 +314,7 @@
#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
__has_extension(cxx_static_assert)
#define _Static_assert(x, y) static_assert(x, y)
-#elif __GNUC_PREREQ__(4,6)
+#elif __GNUC_PREREQ__(4,6) && !defined(__cplusplus)
/* Nothing, gcc 4.6 and higher has _Static_assert built-in */
#elif defined(__COUNTER__)
#define _Static_assert(x, y) __Static_assert(x, __COUNTER__)
--
2.13.7