1 files changed, 34 insertions, 0 deletions
diff --git a/tests/ui/macros/missing-comma.rs b/tests/ui/macros/missing-comma.rs
new file mode 100644
index 00000000000..92f8a779505
--- /dev/null
+++ b/tests/ui/macros/missing-comma.rs
@@ -0,0 +1,34 @@
+macro_rules! foo {
+    ($a:ident) => ();
+    ($a:ident, $b:ident) => ();
+    ($a:ident, $b:ident, $c:ident) => ();
+    ($a:ident, $b:ident, $c:ident, $d:ident) => ();
+    ($a:ident, $b:ident, $c:ident, $d:ident, $e:ident) => ();
+}
+
+macro_rules! bar {
+    ($lvl:expr, $($arg:tt)+) => {}
+}
+
+macro_rules! check {
+    ($ty:ty, $expected:expr) => {};
+    ($ty_of:expr, $expected:expr) => {};
+}
+
+fn main() {
+    println!("{}" a);
+    //~^ ERROR expected `,`, found `a`
+    foo!(a b);
+    //~^ ERROR no rules expected the token `b`
+    foo!(a, b, c, d e);
+    //~^ ERROR no rules expected the token `e`
+    foo!(a, b, c d, e);
+    //~^ ERROR no rules expected the token `d`
+    foo!(a, b, c d e);
+    //~^ ERROR no rules expected the token `d`
+    bar!(Level::Error, );
+    //~^ ERROR unexpected end of macro invocation
+    check!(<str as Debug>::fmt, "fmt");
+    check!(<str as Debug>::fmt, "fmt",);
+    //~^ ERROR no rules expected the token `,`
+}