From: Florian Weimer <fweimer@redhat.com>
Date: Thu, 2 Apr 2015 08:07:04 +0000 (+0200)
Subject: Define libc_max_align_t for internal use
X-Git-Tag: glibc-2.22~431
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=37d60d970c342b7f21a173a363c8be6558ad6e6e;p=thirdparty%2Fglibc.git

Define libc_max_align_t for internal use
---

diff --git a/ChangeLog b/ChangeLog
index 2a7f505a105..9bac2983e4c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2015-04-02  Florian Weimer  <fweimer@redhat.com>
+
+	* include/libc-internal.h (libc_max_align_t): Define.
+
 2015-04-02  Andreas Schwab  <schwab@suse.de>
 
 	[BZ #16850]
diff --git a/include/libc-internal.h b/include/libc-internal.h
index bca59a46144..b37388ecd73 100644
--- a/include/libc-internal.h
+++ b/include/libc-internal.h
@@ -107,4 +107,13 @@ extern void __init_misc (int, char **, char **);
 #define DIAG_IGNORE_NEEDS_COMMENT(version, option)	\
   _Pragma (_DIAG_STR (GCC diagnostic ignored option))
 
+/* This mirrors the C11 max_align_t type provided by GCC, but it is
+   also available in C99 mode.  The aligned attributes are required
+   because some ABIs have reduced alignment requirements for struct
+   and union members.  */
+typedef struct {
+  long long ll __attribute__ ((__aligned__ (__alignof__ (long long))));
+  long double ld __attribute__ ((__aligned__ (__alignof__ (long double))));
+} libc_max_align_t;
+
 #endif /* _LIBC_INTERNAL  */