1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/mi3.c b/gcc/testsuite/gcc.dg/cpp/mi3.c
new file mode 100644
index 000000000..f33fd7887
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/mi3.c
@@ -0,0 +1,20 @@
+/* Another test case for over-eager multiple include optimization.
+   This one distilled from glibc's setlocale.c and categories.def.  */
+/* { dg-do compile } */
+
+#define X a
+#include "mi3.def"
+#undef X
+
+#define X b
+#include "mi3.def"
+#undef X
+
+#include "mi3.h"
+#include "mi3.h"  /* The second include declares variable c.  */
+
+int
+main(void)
+{
+  return a + b + c;
+}