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-rw-r--r--src/test/ui/nll/user-annotations/type-annotation-with-hrtb.rs33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/test/ui/nll/user-annotations/type-annotation-with-hrtb.rs b/src/test/ui/nll/user-annotations/type-annotation-with-hrtb.rs
new file mode 100644
index 000000000..1f7c06038
--- /dev/null
+++ b/src/test/ui/nll/user-annotations/type-annotation-with-hrtb.rs
@@ -0,0 +1,33 @@
+// Regression test for issue #69490
+
+// check-pass
+
+pub trait Trait<T> {
+ const S: &'static str;
+}
+
+impl<T> Trait<()> for T
+where
+ T: for<'a> Trait<&'a ()>,
+{
+ // Use of `T::S` here caused an ICE
+ const S: &'static str = T::S;
+}
+
+// Some similar cases that didn't ICE:
+
+impl<'a, T> Trait<()> for (T,)
+where
+ T: Trait<&'a ()>,
+{
+ const S: &'static str = T::S;
+}
+
+impl<T> Trait<()> for [T; 1]
+where
+ T: Trait<for<'a> fn(&'a ())>,
+{
+ const S: &'static str = T::S;
+}
+
+fn main() {}