Merging upstream version 1.66.0+dfsg1.

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

3 files changed, 61 insertions, 0 deletions

diff --git a/src/test/ui/where-clauses/higher-ranked-fn-type.quiet.stderr b/src/test/ui/where-clauses/higher-ranked-fn-type.quiet.stderr
new file mode 100644
index 000000000..30248a7a3
--- /dev/null
+++ b/src/test/ui/where-clauses/higher-ranked-fn-type.quiet.stderr
@@ -0,0 +1,18 @@
+error[E0277]: the trait bound `for<'b> fn(&'b ()): Foo` is not satisfied
+  --> $DIR/higher-ranked-fn-type.rs:20:5
+   |
+LL |     called()
+   |     ^^^^^^ the trait `for<'b> Foo` is not implemented for `fn(&'b ())`
+   |
+note: required by a bound in `called`
+  --> $DIR/higher-ranked-fn-type.rs:12:25
+   |
+LL | fn called()
+   |    ------ required by a bound in this
+LL | where
+LL |     for<'b> fn(&'b ()): Foo,
+   |                         ^^^ required by this bound in `called`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/src/test/ui/where-clauses/higher-ranked-fn-type.rs b/src/test/ui/where-clauses/higher-ranked-fn-type.rs
new file mode 100644
index 000000000..ab6edde4e
--- /dev/null
+++ b/src/test/ui/where-clauses/higher-ranked-fn-type.rs
@@ -0,0 +1,25 @@
+// revisions: quiet verbose
+// [verbose]compile-flags: -Zverbose
+
+#![allow(unused_parens)]
+
+trait Foo {
+    type Assoc;
+}
+
+fn called()
+where
+    for<'b> fn(&'b ()): Foo,
+{
+}
+
+fn caller()
+where
+    (for<'a> fn(&'a ())): Foo,
+{
+    called()
+    //[quiet]~^ ERROR the trait bound `for<'b> fn(&'b ()): Foo` is not satisfied
+    //[verbose]~^^ ERROR the trait bound `for<'b> fn(&ReLateBound(
+}
+
+fn main() {}
diff --git a/src/test/ui/where-clauses/higher-ranked-fn-type.verbose.stderr b/src/test/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
new file mode 100644
index 000000000..24660ec35
--- /dev/null
+++ b/src/test/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
@@ -0,0 +1,18 @@
+error[E0277]: the trait bound `for<'b> fn(&ReLateBound(DebruijnIndex(1), BoundRegion { var: 0, kind: BrNamed(DefId(0:6 ~ higher_ranked_fn_type[1209]::called::'b), 'b) }) ()): Foo` is not satisfied
+  --> $DIR/higher-ranked-fn-type.rs:20:5
+   |
+LL |     called()
+   |     ^^^^^^ the trait `for<'b> Foo` is not implemented for `fn(&ReLateBound(DebruijnIndex(1), BoundRegion { var: 0, kind: BrNamed(DefId(0:6 ~ higher_ranked_fn_type[1209]::called::'b), 'b) }) ())`
+   |
+note: required by a bound in `called`
+  --> $DIR/higher-ranked-fn-type.rs:12:25
+   |
+LL | fn called()
+   |    ------ required by a bound in this
+LL | where
+LL |     for<'b> fn(&'b ()): Foo,
+   |                         ^^^ required by this bound in `called`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.