2018-11-05  Jakub Jelinek  <jakub@redhat.com>

	Backported from mainline
	2018-10-20  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/87647
	* varasm.c (decode_addr_const): Handle COMPOUND_LITERAL_EXPR.

	* gcc.c-torture/compile/pr87647.c: New test.

--- gcc/varasm.c	(revision 265340)
+++ gcc/varasm.c	(revision 265341)
@@ -2953,6 +2953,11 @@ decode_addr_const (tree exp, struct addr
 		       gen_rtx_SYMBOL_REF (Pmode, "origin of addresses"));
       break;
 
+    case COMPOUND_LITERAL_EXPR:
+      gcc_assert (COMPOUND_LITERAL_EXPR_DECL (target));
+      x = DECL_RTL (COMPOUND_LITERAL_EXPR_DECL (target));
+      break;
+
     default:
       gcc_unreachable ();
     }
--- gcc/testsuite/gcc.c-torture/compile/pr87647.c	(nonexistent)
+++ gcc/testsuite/gcc.c-torture/compile/pr87647.c	(revision 265341)
@@ -0,0 +1,15 @@
+/* PR middle-end/87647 */
+
+struct A {};
+struct A *const b = &(struct A) {};
+struct B { char *s; struct A *t; };
+void bar (struct B *);
+
+void
+foo (void)
+{
+  struct B a[] = { "", b, "", b, "", b, "", b, "", b, "", b, "", b, "", b,
+		   "", b, "", b, "", b, "", b, "", b, "", b, "", b, "", b,
+		   "", b };
+  bar (a);
+}