--- a/gcc/cp/operators.def	Thu Oct 25 07:37:49 2018 +0900
+++ b/gcc/cp/operators.def	Thu Feb 13 11:34:05 2020 +0900
@@ -5,7 +5,7 @@
    non-overloadable operators (like the `?:' ternary operator).
    Written by Mark Mitchell <mark@codesourcery.com>
 
-   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   Copyright (C) 2000-2020 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -87,6 +87,7 @@
 DEF_OPERATOR ("--", PREDECREMENT_EXPR, "mm", OVL_OP_FLAG_UNARY)
 DEF_OPERATOR ("->", COMPONENT_REF, "pt", OVL_OP_FLAG_UNARY)
 DEF_OPERATOR ("sizeof", SIZEOF_EXPR, "sz", OVL_OP_FLAG_UNARY)
+DEF_OPERATOR ("co_await", CO_AWAIT_EXPR, "aw", OVL_OP_FLAG_UNARY)
 
 /* These are extensions.  */
 DEF_OPERATOR ("alignof", ALIGNOF_EXPR, "az", OVL_OP_FLAG_UNARY)
@@ -104,12 +105,16 @@
 DEF_OPERATOR ("^", BIT_XOR_EXPR, "eo", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR ("<<", LSHIFT_EXPR, "ls", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR (">>", RSHIFT_EXPR, "rs", OVL_OP_FLAG_BINARY)
+
+/* defaultable_fn_check relies on the ordering of the comparison operators.  */
 DEF_OPERATOR ("==", EQ_EXPR, "eq", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR ("!=", NE_EXPR, "ne", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR ("<", LT_EXPR, "lt", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR (">", GT_EXPR, "gt", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR ("<=", LE_EXPR, "le", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR (">=", GE_EXPR, "ge", OVL_OP_FLAG_BINARY)
+DEF_OPERATOR ("<=>", SPACESHIP_EXPR, "ss", OVL_OP_FLAG_BINARY)
+
 DEF_OPERATOR ("&&", TRUTH_ANDIF_EXPR, "aa", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR ("||", TRUTH_ORIF_EXPR, "oo", OVL_OP_FLAG_BINARY)
 DEF_OPERATOR (",", COMPOUND_EXPR, "cm", OVL_OP_FLAG_BINARY)