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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 03:57:31 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-30 03:57:31 +0000
commitdc0db358abe19481e475e10c32149b53370f1a1c (patch)
treeab8ce99c4b255ce46f99ef402c27916055b899ee /tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs
parentReleasing progress-linux version 1.71.1+dfsg1-2~progress7.99u1. (diff)
downloadrustc-dc0db358abe19481e475e10c32149b53370f1a1c.tar.xz
rustc-dc0db358abe19481e475e10c32149b53370f1a1c.zip
Merging upstream version 1.72.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs')
-rw-r--r--tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs31
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs b/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs
new file mode 100644
index 000000000..ffd6857d8
--- /dev/null
+++ b/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-90875.rs
@@ -0,0 +1,31 @@
+// check-pass
+
+trait Variable<'a> {
+ type Type;
+}
+
+impl Variable<'_> for () {
+ type Type = ();
+}
+
+fn check<F, T>(_: F)
+where
+ F: Fn(T), // <- if removed, all fn_* then require type annotations
+ F: for<'a> Fn(<T as Variable<'a>>::Type),
+ T: for<'a> Variable<'a>,
+{
+}
+
+fn test(arg: impl Fn(())) {
+ fn fn_1(_: ()) {}
+ let fn_2 = |_: ()| ();
+ let fn_3 = |a| fn_1(a);
+ let fn_4 = arg;
+
+ check(fn_1); // Error
+ check(fn_2); // Ok
+ check(fn_3); // Ok
+ check(fn_4); // Error
+}
+
+fn main() {}