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-rw-r--r--src/test/ui/issues/issue-16562.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-16562.rs b/src/test/ui/issues/issue-16562.rs
new file mode 100644
index 000000000..e16a35158
--- /dev/null
+++ b/src/test/ui/issues/issue-16562.rs
@@ -0,0 +1,17 @@
+trait MatrixShape {}
+
+struct Col<D, C> {
+ data: D,
+ col: C,
+}
+
+trait Collection { fn len(&self) -> usize; }
+
+impl<T, M: MatrixShape> Collection for Col<M, usize> {
+//~^ ERROR type parameter `T` is not constrained
+ fn len(&self) -> usize {
+ unimplemented!()
+ }
+}
+
+fn main() {}