re PR middle-end/90501 (ICE: address taken, but ADDRESSABLE bit not set)

2019-09-05  Richard Biener  <rguenther@suse.de>

	PR middle-end/90501
	* tree-inline.c (declare_return_variable): Mark the return
	slot as addressable after building an address of it.

From-SVN: r275401

gcc/ChangeLog

+2019-09-05  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/90501
+	* tree-inline.c (declare_return_variable): Mark the return
+	slot as addressable after building an address of it.
+
 2019-09-05  Arnaud Charlet  <charlet@adacore.com>
 
 	* doc/install.texi: Update and clarify requirements to build GNAT.

gcc/tree-inline.c

@@ -3569,6 +3569,7 @@ declare_return_variable (copy_body_data *id, tree return_slot, tree modify_dest,
 	     taken by alias analysis.  */
 	  gcc_assert (TREE_CODE (return_slot) != SSA_NAME);
 	  var = return_slot_addr;
+	  mark_addressable (return_slot);
 	}
       else
 	{