4 files changed, 37 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/import1.c b/gcc/testsuite/gcc.dg/cpp/import1.c
new file mode 100644
index 0000000..d118d7f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/import1.c
@@ -0,0 +1,16 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.  */
+
+/* { dg-do preprocess } */
+/* { dg-options "" } */
+
+/* This tests that our eagerness to apply the multiple include guard
+   optimization to the #import doesn't stop us marking the file
+   once-only.
+
+   Neil Booth, 2 August 2003.  */
+
+#include "import1.h"
+#import "import1.h"
+#undef IMPORT1_H
+#define BUG
+#include "import1.h"
diff --git a/gcc/testsuite/gcc.dg/cpp/import1.h b/gcc/testsuite/gcc.dg/cpp/import1.h
new file mode 100644
index 0000000..936c525
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/import1.h
@@ -0,0 +1,6 @@
+#ifndef IMPORT1_H
+#define IMPORT1_H
+#ifdef BUG
+#error Should not happen
+#endif
+#endif
diff --git a/gcc/testsuite/gcc.dg/cpp/import2.c b/gcc/testsuite/gcc.dg/cpp/import2.c
new file mode 100644
index 0000000..5c32523
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/import2.c
@@ -0,0 +1,11 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.  */
+
+/* { dg-do preprocess } */
+/* { dg-options "" } */
+
+/* This tests that the file is only included once
+   Neil Booth, 2 August 2003.  */
+
+#include "import2.h"
+#import "import2.h"
+#include "import2.h"
diff --git a/gcc/testsuite/gcc.dg/cpp/import2.h b/gcc/testsuite/gcc.dg/cpp/import2.h
new file mode 100644
index 0000000..c6a0fa5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/import2.h
@@ -0,0 +1,4 @@
+#ifdef BUG
+#error Should not happen!
+#endif
+#define BUG