--- gcc/config/i386/linuxelf.h	2018/04/24 18:17:05	1.1.1.1
+++ gcc/config/i386/linuxelf.h	2018/04/24 18:23:15	1.1.1.2
@@ -21,9 +21,8 @@
   } while (0)
 /* The svr4 ABI for the i386 says that records and unions are returned
    in memory.  */
-#undef RETURN_IN_MEMORY
-#define RETURN_IN_MEMORY(TYPE) \
-  (TYPE_MODE (TYPE) == BLKmode)
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 1
 /* This is how to output an element of a case-vector that is relative.
    This is only used for PIC code.  See comments by the `casesi' insn in
    i386.md for an explanation of the expression this outputs. */