commit 53a31b41d06059fdaf1f09fd66f5d9e219246759
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Jan 3 22:18:14 2019 +0000

    PR libstdc++/88607 add tests using -finput-charset=ascii
    
    This verifies that the <bits/extc++.h> header can be compiled with ASCII
    as the input character set.
    
            PR libstdc++/88607
            * testsuite/17_intro/headers/c++1998/charset.cc: New test.
            * testsuite/17_intro/headers/c++2011/charset.cc: New test.
            * testsuite/17_intro/headers/c++2014/charset.cc: New test.
            * testsuite/17_intro/headers/c++2017/charset.cc: New test.
            * testsuite/17_intro/headers/c++2020/charset.cc: New test.

diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++1998/charset.cc b/libstdc++-v3/testsuite/17_intro/headers/c++1998/charset.cc
new file mode 100644
index 00000000000..864c64ef831
--- /dev/null
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++1998/charset.cc
@@ -0,0 +1,4 @@
+// { dg-options "-finput-charset=ascii" }
+// { dg-do compile }
+
+#include <bits/extc++.h>
diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++2011/charset.cc b/libstdc++-v3/testsuite/17_intro/headers/c++2011/charset.cc
new file mode 100644
index 00000000000..864c64ef831
--- /dev/null
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++2011/charset.cc
@@ -0,0 +1,4 @@
+// { dg-options "-finput-charset=ascii" }
+// { dg-do compile }
+
+#include <bits/extc++.h>
diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++2014/charset.cc b/libstdc++-v3/testsuite/17_intro/headers/c++2014/charset.cc
new file mode 100644
index 00000000000..864c64ef831
--- /dev/null
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++2014/charset.cc
@@ -0,0 +1,4 @@
+// { dg-options "-finput-charset=ascii" }
+// { dg-do compile }
+
+#include <bits/extc++.h>
diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++2017/charset.cc b/libstdc++-v3/testsuite/17_intro/headers/c++2017/charset.cc
new file mode 100644
index 00000000000..864c64ef831
--- /dev/null
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++2017/charset.cc
@@ -0,0 +1,4 @@
+// { dg-options "-finput-charset=ascii" }
+// { dg-do compile }
+
+#include <bits/extc++.h>
diff --git a/libstdc++-v3/testsuite/17_intro/headers/c++2020/charset.cc b/libstdc++-v3/testsuite/17_intro/headers/c++2020/charset.cc
new file mode 100644
index 00000000000..864c64ef831
--- /dev/null
+++ b/libstdc++-v3/testsuite/17_intro/headers/c++2020/charset.cc
@@ -0,0 +1,4 @@
+// { dg-options "-finput-charset=ascii" }
+// { dg-do compile }
+
+#include <bits/extc++.h>