1 files changed, 110 insertions, 0 deletions
diff --git a/tests/ui/rust-2021/reserved-prefixes.stderr b/tests/ui/rust-2021/reserved-prefixes.stderr
new file mode 100644
index 000000000..807d6d98b
--- /dev/null
+++ b/tests/ui/rust-2021/reserved-prefixes.stderr
@@ -0,0 +1,110 @@
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:16:12
+   |
+LL |     demo3!(foo#bar);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo3!(foo #bar);
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:17:12
+   |
+LL |     demo2!(foo"bar");
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo2!(foo "bar");
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:18:12
+   |
+LL |     demo2!(foo'b');
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo2!(foo 'b');
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:20:12
+   |
+LL |     demo2!(foo'b);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo2!(foo 'b);
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:21:12
+   |
+LL |     demo3!(foo# bar);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo3!(foo # bar);
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:22:12
+   |
+LL |     demo4!(foo#! bar);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo4!(foo #! bar);
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:23:12
+   |
+LL |     demo4!(foo## bar);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo4!(foo ## bar);
+   |               +
+
+error: prefix `foo` is unknown
+  --> $DIR/reserved-prefixes.rs:25:12
+   |
+LL |     demo4!(foo#bar#);
+   |            ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo4!(foo #bar#);
+   |               +
+
+error: prefix `bar` is unknown
+  --> $DIR/reserved-prefixes.rs:25:16
+   |
+LL |     demo4!(foo#bar#);
+   |                ^^^ unknown prefix
+   |
+   = note: prefixed identifiers and literals are reserved since Rust 2021
+help: consider inserting whitespace here
+   |
+LL |     demo4!(foo#bar #);
+   |                   +
+
+error: aborting due to 9 previous errors
+