Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 34 insertions, 0 deletions

diff --git a/tests/ui/macros/meta-variable-misuse.rs b/tests/ui/macros/meta-variable-misuse.rs
new file mode 100644
index 000000000..99a2f9401
--- /dev/null
+++ b/tests/ui/macros/meta-variable-misuse.rs
@@ -0,0 +1,34 @@
+// run-pass
+#![deny(meta_variable_misuse)]
+
+macro_rules! foo {
+    ($($m:ident $($f:ident $v:tt)+),*) => {
+        $($(macro_rules! $f { () => { $v } })+)*
+        $(macro_rules! $m { () => { $(fn $f() -> i32 { $v })+ } })*
+    }
+}
+
+foo!(m a 1 b 2, n c 3);
+m!();
+n!();
+
+macro_rules! no_shadow {
+    ($x:tt) => { macro_rules! bar { ($x:tt) => { 42 }; } };
+}
+no_shadow!(z);
+
+macro_rules! make_plus {
+    ($n: ident $x:expr) => { macro_rules! $n { ($y:expr) => { $x + $y }; } };
+}
+make_plus!(add3 3);
+
+fn main() {
+    assert_eq!(a!(), 1);
+    assert_eq!(b!(), 2);
+    assert_eq!(c!(), 3);
+    assert_eq!(a(), 1);
+    assert_eq!(b(), 2);
+    assert_eq!(c(), 3);
+    assert_eq!(bar!(z:tt), 42);
+    assert_eq!(add3!(9), 12);
+}