1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/ext/char8_t-udl-2.C b/gcc/testsuite/g++.dg/ext/char8_t-udl-2.C
new file mode 100644
index 00000000000..74cc775e87c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/char8_t-udl-2.C
@@ -0,0 +1,21 @@
+// Test overloading for UTF-8 user defined literals when -fchar8_t is in effect.
+// { dg-do compile }
+// { dg-options "-std=c++17 -fchar8_t" }
+
+template<typename T1, typename T2>
+  struct is_same
+  { static const bool value = false; };
+
+template<typename T>
+  struct is_same<T, T>
+  { static const bool value = true; };
+
+int operator "" _udcl(char);
+long operator "" _udcl(char8_t);
+static_assert(is_same<decltype('x'_udcl), int>::value, "Error");
+static_assert(is_same<decltype(u8'x'_udcl), long>::value, "Error");
+
+int operator "" _udsl(const char*, __SIZE_TYPE__);
+long operator "" _udsl(const char8_t*, __SIZE_TYPE__);
+static_assert(is_same<decltype("x"_udsl), int>::value, "Error");
+static_assert(is_same<decltype(u8"x"_udsl), long>::value, "Error");