# HG changeset patch
# User Paul Eggert <eggert@cs.ucla.edu>
# Date 1320160975 25200
# Node ID 5a444545ea59c6bdeed71ed03ea8480ee40cc7a9
# Parent  3389dd4f050ed8801768333d95ee10505ea888c3
* tests/test-stdalign.c (TEST_ALIGNMENT): Shrink back to 8.

mingw supports alignments only up to 8 (!).  Reported by Bruno Haible in
<http://lists.gnu.org/archive/html/bug-gnulib/2011-11/msg00006.html>.
* doc/posix-headers/stdalign.texi (stdalign.h): Document this.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-11-01  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* tests/test-stdalign.c (TEST_ALIGNMENT): Shrink back to 8.
+	mingw supports alignments only up to 8 (!).  Reported by Bruno Haible in
+	<http://lists.gnu.org/archive/html/bug-gnulib/2011-11/msg00006.html>.
+	* doc/posix-headers/stdalign.texi (stdalign.h): Document this.
+
 2011-11-01  Bruno Haible  <bruno@clisp.org>
 
 	alignof: Avoid collision with stdalign module.
diff --git a/doc/posix-headers/stdalign.texi b/doc/posix-headers/stdalign.texi
--- a/doc/posix-headers/stdalign.texi
+++ b/doc/posix-headers/stdalign.texi
@@ -29,6 +29,9 @@
 variables on the stack).  They diagnose and ignore the alignment: Sun
 C 5.11.
 @item
+Some linkers do not support operands of @code{_Alignas}/@code{alignas}
+that are greater than 8: mingw.
+@item
 Some compilers require the operand of @code{_Alignas}/@code{alignas}
 to be a single integer constant, not an expression: MSVC 7.0 through
 at least 10.0.
diff --git a/tests/test-stdalign.c b/tests/test-stdalign.c
--- a/tests/test-stdalign.c
+++ b/tests/test-stdalign.c
@@ -43,7 +43,9 @@
 # ifndef alignas
 #  error "alignas is not a macro"
 # endif
-# define TEST_ALIGNMENT 16
+/* mingw can go up only to 8.  8 is all that GNU Emacs needs, so let's
+   limit the test to 8 for now.  */
+# define TEST_ALIGNMENT 8
 #else
 # define _Alignas(alignment)
 # define alignas(alignment)