re PR c/53037 (warn_if_not_aligned(X))

	PR c/53037
	* stor-layout.c: Include attribs.h.
	(handle_warn_if_not_align): Replace test on TYPE_USER_ALIGN with
	explicit lookup of "aligned" attribute.

From-SVN: r254503

gcc/ChangeLog

+2017-11-07  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR c/53037
+	* stor-layout.c: Include attribs.h.
+	(handle_warn_if_not_align): Replace test on TYPE_USER_ALIGN with
+	explicit lookup of "aligned" attribute.
+
 2017-11-07  Andrew Waterman  <andrew@sifive.com>
 
 	* config/riscv/riscv-protos.h (riscv_hard_regno_nregs): New

gcc/stor-layout.c

@@ -40,6 +40,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-inline.h"
 #include "dumpfile.h"
 #include "gimplify.h"
+#include "attribs.h"
 #include "debug.h"
 
 /* Data type for the expressions representing sizes of data types.
@@ -1106,7 +1107,7 @@ handle_warn_if_not_align (tree field, unsigned int record_align)
 
   if (!warn_if_not_align
       && warn_packed_not_aligned
-      && TYPE_USER_ALIGN (type))
+      && lookup_attribute ("aligned", TYPE_ATTRIBUTES (type)))
     {
       warn_if_not_align = TYPE_ALIGN (type);
       opt_w = OPT_Wpacked_not_aligned;