1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/cpp/macro5.c b/gcc/testsuite/gcc.dg/cpp/macro5.c
new file mode 100644
index 0000000..9e226b8
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/cpp/macro5.c
@@ -0,0 +1,24 @@
+/* { dg-do preprocess } */
+
+/* Test source Robert Lipe, with minor modifications for the testsuite
+   by Neil Booth.  29 Oct 2000.  */
+
+#define _VA_ARGS_0() 42
+#define _L_0()                      (
+#define _R_0()                      )
+
+#define __VA_ARGLIST(argc,list) \
+                _VA_ARGS_##argc list
+
+#define _CAT_LIST(argc,list1,list2) \
+                _L_##argc list1 _R_##argc list2
+
+#define _VA_ARGLIST(argc,list1,list2) \
+                __VA_ARGLIST(argc, \
+                        _CAT_LIST(argc, list1, list2))
+
+#define BLAH(a) _VA_ARGLIST(a, (), ())
+
+#if BLAH (0) != 42
+#error Simulated varargs macros
+#endif