Rollup merge of #77371 - camelid:remove-extra-space-in-diagnostic, r=varkor

Remove trailing space in error message

- Add test for error message
- Remove trailing space in error message

2 files changed, 18 insertions, 0 deletions

diff --git a/src/test/ui/slice-to-vec-comparison.rs b/src/test/ui/slice-to-vec-comparison.rs
new file mode 100644
index 00000000000..7026a49000c
--- /dev/null
+++ b/src/test/ui/slice-to-vec-comparison.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let a = &[];
+    let b: &Vec<u8> = &vec![];
+    a > b;
+    //~^ ERROR mismatched types
+}
diff --git a/src/test/ui/slice-to-vec-comparison.stderr b/src/test/ui/slice-to-vec-comparison.stderr
new file mode 100644
index 00000000000..e3b3b040f66
--- /dev/null
+++ b/src/test/ui/slice-to-vec-comparison.stderr
@@ -0,0 +1,12 @@
+error[E0308]: mismatched types
+  --> $DIR/slice-to-vec-comparison.rs:4:9
+   |
+LL |     a > b;
+   |         ^ expected array of 0 elements, found struct `Vec`
+   |
+   = note: expected reference `&[_; 0]`
+              found reference `&Vec<u8>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.