From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/stmt_expr_attrs_no_feature.rs | 141 +++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 tests/ui/stmt_expr_attrs_no_feature.rs

(limited to 'tests/ui/stmt_expr_attrs_no_feature.rs')

diff --git a/tests/ui/stmt_expr_attrs_no_feature.rs b/tests/ui/stmt_expr_attrs_no_feature.rs
new file mode 100644
index 000000000..627c97da0
--- /dev/null
+++ b/tests/ui/stmt_expr_attrs_no_feature.rs
@@ -0,0 +1,141 @@
+#![feature(rustc_attrs)]
+
+macro_rules! stmt_mac {
+    () => {
+        fn b() {}
+    }
+}
+
+fn main() {
+    #[rustc_dummy]
+    fn a() {}
+
+    // Bug: built-in attrs like `rustc_dummy` are not gated on blocks, but other attrs are.
+    #[rustfmt::skip] //~ ERROR attributes on expressions are experimental
+    {
+
+    }
+
+    #[rustc_dummy]
+    5;
+
+    #[rustc_dummy]
+    stmt_mac!();
+}
+
+// Check that cfg works right
+
+#[cfg(unset)]
+fn c() {
+    #[rustc_dummy]
+    5;
+}
+
+#[cfg(not(unset))]
+fn j() {
+    #[rustc_dummy]
+    5;
+}
+
+#[cfg_attr(not(unset), cfg(unset))]
+fn d() {
+    #[rustc_dummy]
+    8;
+}
+
+#[cfg_attr(not(unset), cfg(not(unset)))]
+fn i() {
+    #[rustc_dummy]
+    8;
+}
+
+// check that macro expansion and cfg works right
+
+macro_rules! item_mac {
+    ($e:ident) => {
+        fn $e() {
+            #[rustc_dummy]
+            42;
+
+            #[cfg(unset)]
+            fn f() {
+                #[rustc_dummy]
+                5;
+            }
+
+            #[cfg(not(unset))]
+            fn k() {
+                #[rustc_dummy]
+                5;
+            }
+
+            #[cfg_attr(not(unset), cfg(unset))]
+            fn g() {
+                #[rustc_dummy]
+                8;
+            }
+
+            #[cfg_attr(not(unset), cfg(not(unset)))]
+            fn h() {
+                #[rustc_dummy]
+                8;
+            }
+
+        }
+    }
+}
+
+item_mac!(e);
+
+// check that the gate visitor works right:
+
+extern "C" {
+    #[cfg(unset)]
+    fn x(a: [u8; #[rustc_dummy] 5]);
+    fn y(a: [u8; #[rustc_dummy] 5]); //~ ERROR attributes on expressions are experimental
+}
+
+struct Foo;
+impl Foo {
+    #[cfg(unset)]
+    const X: u8 = #[rustc_dummy] 5;
+    const Y: u8 = #[rustc_dummy] 5; //~ ERROR attributes on expressions are experimental
+}
+
+trait Bar {
+    #[cfg(unset)]
+    const X: [u8; #[rustc_dummy] 5];
+    const Y: [u8; #[rustc_dummy] 5]; //~ ERROR attributes on expressions are experimental
+}
+
+struct Joyce {
+    #[cfg(unset)]
+    field: [u8; #[rustc_dummy] 5],
+    field2: [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
+}
+
+struct Walky(
+    #[cfg(unset)] [u8; #[rustc_dummy] 5],
+    [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
+);
+
+enum Mike {
+    Happy(
+        #[cfg(unset)] [u8; #[rustc_dummy] 5],
+        [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
+    ),
+    Angry {
+        #[cfg(unset)]
+        field: [u8; #[rustc_dummy] 5],
+        field2: [u8; #[rustc_dummy] 5] //~ ERROR attributes on expressions are experimental
+    }
+}
+
+fn pat() {
+    match 5 {
+        #[cfg(unset)]
+        5 => #[rustc_dummy] (),
+        6 => #[rustc_dummy] (), //~ ERROR attributes on expressions are experimental
+        _ => (),
+    }
+}
-- 
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