re PR middle-end/87647 (ICE on valid code in decode_addr_const, at varasm.c:2958)

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

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

From-SVN: r265341

gcc/ChangeLog

+2018-10-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/87647
+	* varasm.c (decode_addr_const): Handle COMPOUND_LITERAL_EXPR.
+
 2018-10-20  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* doc/ux.texi: Move @section directly after @node.

gcc/testsuite/ChangeLog

+2018-10-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/87647
+	* gcc.c-torture/compile/pr87647.c: New test.
+
 2018-10-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/85488

gcc/testsuite/gcc.c-torture/compile/pr87647.c

+/* 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);
+}

gcc/varasm.c

@@ -2953,6 +2953,11 @@ decode_addr_const (tree exp, struct addr_const *value)
 		       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 ();
     }