Add test for macro invocations with empty arguments.

This case was recently solved on the take-2 branch.

diff --git a/tests/057-empty-arguments.c b/tests/057-empty-arguments.c
new file mode 100644 (file)
index 0000000..6140232
--- /dev/null
+++ b/tests/057-empty-arguments.c
@@ -0,0 +1,6 @@
+#define zero() success
+zero()
+#define one(x) success
+one()
+#define two(x,y) success
+two(,)