--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/ext/char8_t-type-specifier-2.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,16 @@
+// Test that char8_t is recognized as a type specifier if -fchar8_t is enabled.
+// { dg-do compile }
+// { dg-options "-fchar8_t" }
+
+char8_t c8;
+
+signed char8_t         sc8;            /* { dg-error "signed" } */
+unsigned char8_t       uc8;            /* { dg-error "unsigned" } */
+
+short char8_t          shc8;           /* { dg-error "short" } */
+long char8_t           lgc8;           /* { dg-error "long" } */
+
+signed short char8_t   ssc8;           /* { dg-error "signed" } */
+signed long char8_t    slc8;           /* { dg-error "signed" } */
+unsigned short char8_t usc8;           /* { dg-error "unsigned" } */
+unsigned long char8_t  ulc8;           /* { dg-error "unsigned" } */