1 files changed, 66 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/plugin/start_unit_plugin.c b/gcc/testsuite/gcc.dg/plugin/start_unit_plugin.c
new file mode 100644
index 000000000..5b16e84a4
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/plugin/start_unit_plugin.c
@@ -0,0 +1,66 @@
+/* This plugin tests the correct operation of a PLUGIN_START_UNIT callback.
+ * By the time a PLUGIN_START_UNIT callback is invoked, the frontend 
+ * initialization should have completed. At least the different *_type_nodes
+ * should have been created. This plugin creates an artifical global 
+ * interger variable.
+ * 
+*/
+#include "gcc-plugin.h"
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "toplev.h"
+#include "basic-block.h"
+#include "gimple.h"
+#include "tree.h"
+#include "tree-pass.h"
+#include "intl.h"
+
+int plugin_is_GPL_compatible;
+static tree fake_var = NULL;
+
+static bool
+gate_start_unit (void)
+{
+  return true;
+}
+
+static void start_unit_callback (void *gcc_data, void *user_data)
+{
+  if (integer_type_node) {
+    fake_var = build_decl (UNKNOWN_LOCATION, VAR_DECL, 
+                           get_identifier ("_fake_var_"),
+                           integer_type_node);
+    TREE_PUBLIC (fake_var) = 1;
+    DECL_ARTIFICIAL (fake_var) = 1;
+  }
+}
+
+static void finish_unit_callback (void *gcc_data, void *user_data)
+{
+  if (fake_var == NULL) {
+    printf ("fake_var not created \n");
+    return;
+  }
+  if (TREE_CODE (fake_var) != VAR_DECL) {
+    printf ("fake_var not a VAR_DECL \n");
+    return;
+  }
+  if (TREE_CODE (TREE_TYPE (fake_var)) != INTEGER_TYPE) {
+    printf ("fake_var not INTEGER_TYPE \n");
+    return;
+  }
+  if (DECL_ARTIFICIAL (fake_var) == 0) {
+    printf ("fake_var not ARTIFICIAL \n");
+    return;
+  }
+}
+
+int plugin_init (struct plugin_name_args *plugin_info,
+                 struct plugin_gcc_version *version)
+{
+  register_callback ("start_unit", PLUGIN_START_UNIT, &start_unit_callback, NULL);
+  register_callback ("finish_unit", PLUGIN_FINISH_UNIT, &finish_unit_callback, NULL);
+  return 0;
+}