New patch to review for coreboot: stddef.h: Disable check_member() macro when compiling with CLANG

[Stefan Reinauer]

Stefan Reinauer ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10827

-gerrit

commit 34c7c8d402b9c192ff6bef20c2bf7a5cbec6d586
Author: Stefan Reinauer 
Date:   Tue Jul 7 21:31:55 2015 +0200

stddef.h: Disable check_member() macro when compiling with CLANG

CLANG assumes that _Static_assert() is a C++11 only feature and
    errs out when encountering the check_member macro complaining about
    a reinterpret_cast.

Change-Id: Id8c6b47b4f5716e6184aec9e0bc4b0e1c7aaf17c
    Signed-off-by: Stefan Reinauer 
---
 src/include/stddef.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/include/stddef.h b/src/include/stddef.h
index 3bbf914..f87c65f 100644
--- a/src/include/stddef.h
+++ b/src/include/stddef.h
@@ -32,9 +32,13 @@ typedef unsigned int wint_t;

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

+#if !defined(__clang__)
 #define check_member(structure, member, offset) _Static_assert( \
    offsetof(struct structure, member) == offset, \
    "`struct " #structure "` offset for `" #member "` is not " #offset )
+#else
+#define check_member(structure, member, offset)
+#endif

/**
  * container_of - cast a member of a structure out to the containing structure