Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 81 insertions, 0 deletions

diff --git a/tests/ui/trait-bounds/mismatch-fn-trait.stderr b/tests/ui/trait-bounds/mismatch-fn-trait.stderr
new file mode 100644
index 000000000..961e6d88f
--- /dev/null
+++ b/tests/ui/trait-bounds/mismatch-fn-trait.stderr
@@ -0,0 +1,81 @@
+error[E0277]: expected a `FnMut<(i32,)>` closure, found `impl FnMut(u32)`
+  --> $DIR/mismatch-fn-trait.rs:4:10
+   |
+LL |     take(f)
+   |     ---- ^ expected an `FnMut<(i32,)>` closure, found `impl FnMut(u32)`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: expected a closure with arguments `(u32,)`
+              found a closure with arguments `(i32,)`
+note: required by a bound in `take`
+  --> $DIR/mismatch-fn-trait.rs:1:18
+   |
+LL | fn take(_f: impl FnMut(i32)) {}
+   |                  ^^^^^^^^^^ required by this bound in `take`
+
+error[E0277]: expected a `FnMut<(i32,)>` closure, found `impl FnMut(i32, i32)`
+  --> $DIR/mismatch-fn-trait.rs:9:10
+   |
+LL |     take(f)
+   |     ---- ^ expected an `FnMut<(i32,)>` closure, found `impl FnMut(i32, i32)`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: expected a closure taking 2 arguments, but one taking 1 argument was given
+note: required by a bound in `take`
+  --> $DIR/mismatch-fn-trait.rs:1:18
+   |
+LL | fn take(_f: impl FnMut(i32)) {}
+   |                  ^^^^^^^^^^ required by this bound in `take`
+
+error[E0277]: expected a `FnMut<(i32,)>` closure, found `impl FnMut()`
+  --> $DIR/mismatch-fn-trait.rs:14:10
+   |
+LL |     take(f)
+   |     ---- ^ expected an `FnMut<(i32,)>` closure, found `impl FnMut()`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: expected a closure taking 0 arguments, but one taking 1 argument was given
+note: required by a bound in `take`
+  --> $DIR/mismatch-fn-trait.rs:1:18
+   |
+LL | fn take(_f: impl FnMut(i32)) {}
+   |                  ^^^^^^^^^^ required by this bound in `take`
+
+error[E0277]: expected a `FnMut<(i32,)>` closure, found `impl FnOnce(i32)`
+  --> $DIR/mismatch-fn-trait.rs:19:10
+   |
+LL |     take(f)
+   |     ---- ^ expected an `FnMut<(i32,)>` closure, found `impl FnOnce(i32)`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: `impl FnOnce(i32)` implements `FnOnce`, but it must implement `FnMut`, which is more general
+note: required by a bound in `take`
+  --> $DIR/mismatch-fn-trait.rs:1:18
+   |
+LL | fn take(_f: impl FnMut(i32)) {}
+   |                  ^^^^^^^^^^ required by this bound in `take`
+
+error[E0277]: expected a `FnMut<(i32,)>` closure, found `impl FnOnce(u32)`
+  --> $DIR/mismatch-fn-trait.rs:24:10
+   |
+LL |     take(f)
+   |     ---- ^ expected an `FnMut<(i32,)>` closure, found `impl FnOnce(u32)`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = note: `impl FnOnce(u32)` implements `FnOnce`, but it must implement `FnMut`, which is more general
+   = note: expected a closure with arguments `(u32,)`
+              found a closure with arguments `(i32,)`
+note: required by a bound in `take`
+  --> $DIR/mismatch-fn-trait.rs:1:18
+   |
+LL | fn take(_f: impl FnMut(i32)) {}
+   |                  ^^^^^^^^^^ required by this bound in `take`
+
+error: aborting due to 5 previous errors
+
+For more information about this error, try `rustc --explain E0277`.