re PR c/72816 (ICE on x86_64-linux-gnu (tree check: expected tree that contains…

re PR c/72816 (ICE on x86_64-linux-gnu (tree check: expected tree that contains ‘decl with RTL’ structure, have ‘field_decl’ in set_decl_rtl, at emit-rtl.c:1282))

	PR c/72816
	* stor-layout.c (layout_decl): Fix up formatting.
	(relayout_decl): Allow DECL to be FIELD_DECL.

	* gcc.dg/pr72816.c: New test.

From-SVN: r239218

gcc/ChangeLog

+2016-08-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/72816
+	* stor-layout.c (layout_decl): Fix up formatting.
+	(relayout_decl): Allow DECL to be FIELD_DECL.
+
 2016-08-07  Alan Modra  <amodra@gmail.com>
 
 	* config/rs6000/rs6000.md (fix_trunc<mode>si2): Fix mode of reg.

gcc/stor-layout.c

@@ -596,7 +596,7 @@ layout_decl (tree decl, unsigned int known_align)
     return;
 
   gcc_assert (code == VAR_DECL || code == PARM_DECL || code == RESULT_DECL
-	      || code == TYPE_DECL ||code == FIELD_DECL);
+	      || code == TYPE_DECL || code == FIELD_DECL);
 
   rtl = DECL_RTL_IF_SET (decl);
 
@@ -768,8 +768,8 @@ layout_decl (tree decl, unsigned int known_align)
     }
 }
 
-/* Given a VAR_DECL, PARM_DECL or RESULT_DECL, clears the results of
-   a previous call to layout_decl and calls it again.  */
+/* Given a VAR_DECL, PARM_DECL, RESULT_DECL, or FIELD_DECL, clears the
+   results of a previous call to layout_decl and calls it again.  */
 
 void
 relayout_decl (tree decl)
@@ -778,7 +778,8 @@ relayout_decl (tree decl)
   DECL_MODE (decl) = VOIDmode;
   if (!DECL_USER_ALIGN (decl))
     SET_DECL_ALIGN (decl, 0);
-  SET_DECL_RTL (decl, 0);
+  if (DECL_RTL_SET_P (decl))
+    SET_DECL_RTL (decl, 0);
 
   layout_decl (decl, 0);
 }

gcc/testsuite/ChangeLog

+2016-08-07  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/72816
+	* gcc.dg/pr72816.c: New test.
+
 2016-08-06  Jonathan Wakely  <jwakely@redhat.com>
 
 	* g++.dg/conversion/pr16333.C: Adjust dg-error regexp.

gcc/testsuite/gcc.dg/pr72816.c

+/* PR c/72816 */
+/* { dg-do compile } */
+/* { dg-options "-std=gnu11" } */
+
+typedef const int A[];
+struct S {
+  int a;
+  A b;	/* { dg-error "array size missing" } */
+};