diff --git a/libiberty/cp-demangle.c b/libiberty/cp-demangle.c
index 3639bfbfd430..fc55b7fae1fb 100644
--- a/libiberty/cp-demangle.c
+++ b/libiberty/cp-demangle.c
@@ -1802,6 +1802,7 @@ const struct demangle_operator_info cplus_demangle_operators[] =
   { "ad", NL ("&"),         1 },
   { "an", NL ("&"),         2 },
   { "at", NL ("alignof "),   1 },
+  { "aw", NL ("co_await "), 1 },
   { "az", NL ("alignof "),   1 },
   { "cc", NL ("const_cast"), 2 },
   { "cl", NL ("()"),        2 },
diff --git a/libiberty/testsuite/demangle-expected b/libiberty/testsuite/demangle-expected
index 5878d96dee32..daffe7821122 100644
--- a/libiberty/testsuite/demangle-expected
+++ b/libiberty/testsuite/demangle-expected
@@ -1450,3 +1450,6 @@ Foo<int>()::{lambda(auto:1)#1}::operator()<char>(char) const::X::fn
 
 _Z3fooILPv0EEvPN9enable_ifIXeqT_LDnEEvE4typeE
 void foo<(void*)0>(enable_if<((void*)0)==((decltype(nullptr))), void>::type*)
+
+_ZNK5coro15emptyawEv
+coro1::empty::operator co_await() const