1 files changed, 91 insertions, 0 deletions
diff --git a/tests/shadow.c b/tests/shadow.c
new file mode 100644
index 00000000..2247f397
--- /dev/null
+++ b/tests/shadow.c
@@ -0,0 +1,91 @@
+/* GNU m4 -- A simple macro processor
+   Copyright (C) 1999-2000, 2006-2008, 2010, 2013 Free Software
+   Foundation, Inc.
+
+   This file is part of GNU M4.
+
+   GNU M4 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.
+
+   GNU M4 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+/* Build using only the exported interfaces, unless NDEBUG is set, in
+   which case use private symbols to speed things up as much as possible.  */
+#ifndef NDEBUG
+#  include <m4/m4module.h>
+#else
+#  include "m4private.h"
+#endif
+
+/*         function     macros  blind   side    minargs maxargs */
+#define builtin_functions                       \
+  BUILTIN (shadow,      false,  false,  false,  0,      -1 )    \
+  BUILTIN (test,        false,  false,  false,  0,      -1 )    \
+
+
+#define BUILTIN(handler, macros, blind, side, min, max) M4BUILTIN (handler)
+  builtin_functions
+#undef BUILTIN
+
+static const m4_builtin m4_builtin_table[] =
+{
+#define BUILTIN(handler, macros, blind, side, min, max)                 \
+  M4BUILTIN_ENTRY (handler, #handler, macros, blind, side, min, max)
+
+  builtin_functions
+#undef BUILTIN
+
+  { NULL, NULL, 0, 0, 0 },
+};
+
+static const m4_macro m4_macro_table[] =
+{
+  /* name               text            min     max */
+  { "__test__",         "`shadow'",     0,      0 },
+  { NULL,               NULL,           0,      0 },
+};
+
+
+
+void
+include_shadow (m4 *context, m4_module *module, m4_obstack *obs)
+{
+  const char *s = "Shadow module loaded.";
+
+  if (obs)
+      obstack_grow (obs, s, strlen (s));
+
+  m4_install_builtins (context, module, m4_builtin_table);
+  m4_install_macros   (context, module, m4_macro_table);
+}
+
+
+
+/**
+ * shadow()
+ **/
+M4BUILTIN_HANDLER (shadow)
+{
+  const char *s = "Shadow::`shadow' called.";
+  obstack_grow (obs, s, strlen (s));
+}
+
+/**
+ * test()
+ **/
+M4BUILTIN_HANDLER (test)
+{
+  const char *s = "Shadow::`test' called.";
+  obstack_grow (obs, s, strlen (s));
+}