3 files changed, 18 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp2a/char8_t1.C b/gcc/testsuite/g++.dg/cpp2a/char8_t1.C
new file mode 100644
index 00000000000..aa0860b9f63
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/char8_t1.C
@@ -0,0 +1,5 @@
+// P0482R6
+// { dg-do compile }
+// { dg-options "-std=c++2a" }
+
+char8_t c8;
diff --git a/gcc/testsuite/g++.dg/cpp2a/char8_t2.C b/gcc/testsuite/g++.dg/cpp2a/char8_t2.C
new file mode 100644
index 00000000000..71eea7952d3
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/char8_t2.C
@@ -0,0 +1,5 @@
+// P0482R6
+// { dg-do compile }
+// { dg-options "-std=c++2a -fno-char8_t" }
+
+char8_t c8; // { dg-error "does not name a type" }
diff --git a/gcc/testsuite/g++.dg/cpp2a/feat-cxx2a.C b/gcc/testsuite/g++.dg/cpp2a/feat-cxx2a.C
index b80cc342364..8e1ea48bb1d 100644
--- a/gcc/testsuite/g++.dg/cpp2a/feat-cxx2a.C
+++ b/gcc/testsuite/g++.dg/cpp2a/feat-cxx2a.C
@@ -471,3 +471,11 @@
 #else
 #  error "__has_cpp_attribute"
 #endif
+
+// C++2A features:
+
+#ifndef __cpp_char8_t
+#  error "__cpp_char8_t"
+#elif __cpp_char8_t != 201811
+#  error "__cpp_char8_t != 201811"
+#endif