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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
commit246f239d9f40f633160f0c18f87a20922d4e77bb (patch)
tree5a88572663584b3d4d28e5a20e10abab1be40884 /src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs
parentReleasing progress-linux version 1.64.0+dfsg1-1~progress7.99u1. (diff)
downloadrustc-246f239d9f40f633160f0c18f87a20922d4e77bb.tar.xz
rustc-246f239d9f40f633160f0c18f87a20922d4e77bb.zip
Merging debian version 1.65.0+dfsg1-2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs')
-rw-r--r--src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs b/src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs
new file mode 100644
index 000000000..e70f6fc34
--- /dev/null
+++ b/src/test/ui/higher-rank-trait-bounds/issue-62203-hrtb-ice.rs
@@ -0,0 +1,54 @@
+trait T0<'a, A> {
+ type O;
+}
+
+struct L<T> {
+ f: T,
+}
+
+// explicitly named variants of what one would normally denote by the
+// unit type `()`. Why do this? So that we can differentiate them in
+// the diagnostic output.
+struct Unit1;
+struct Unit2;
+struct Unit3;
+struct Unit4;
+
+impl<'a, A, T> T0<'a, A> for L<T>
+where
+ T: FnMut(A) -> Unit3,
+{
+ type O = T::Output;
+}
+
+trait T1: for<'r> Ty<'r> {
+ fn m<'a, B: Ty<'a>, F>(&self, f: F) -> Unit1
+ where
+ F: for<'r> T0<'r, (<Self as Ty<'r>>::V,), O = <B as Ty<'r>>::V>,
+ {
+ unimplemented!();
+ }
+}
+
+trait Ty<'a> {
+ type V;
+}
+
+fn main() {
+ let v = Unit2.m(
+ L {
+ //~^ ERROR to be a closure that returns `Unit3`, but it returns `Unit4`
+ //~| ERROR type mismatch
+ f: |x| {
+ drop(x);
+ Unit4
+ },
+ },
+ );
+}
+
+impl<'a> Ty<'a> for Unit2 {
+ type V = &'a u8;
+}
+
+impl T1 for Unit2 {}