1 files changed, 40 insertions, 0 deletions
diff --git a/src/gl/tests/test-func.c b/src/gl/tests/test-func.c
new file mode 100644
index 0000000..d680759
--- /dev/null
+++ b/src/gl/tests/test-func.c
@@ -0,0 +1,40 @@
+/* Test whether __func__ is available
+   Copyright (C) 2008-2021 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include <string.h>
+
+#include "macros.h"
+
+int
+main ()
+{
+  ASSERT (strlen (__func__) > 0);
+
+  /* On SunPRO C 5.9, sizeof __func__ evaluates to 0.  The compiler warns:
+     "warning: null dimension: sizeof()".  */
+#if !defined __SUNPRO_C
+  ASSERT (strlen (__func__) + 1 == sizeof __func__);
+#endif
+
+  ASSERT (strcmp (__func__, "main") == 0
+          || strcmp (__func__, "<unknown function>") == 0);
+
+  return 0;
+}