Add regression test for #62579

src/test/ui/const-generics/issues/issue-62579-no-match.rs

@@ -0,0 +1,15 @@
+// run-pass
+
+#![feature(const_generics)]
+//~^ WARN the feature `const_generics` is incomplete and may cause the compiler to crash
+
+#[derive(PartialEq, Eq)]
+struct NoMatch;
+
+fn foo<const T: NoMatch>() -> bool {
+    true
+}
+
+fn main() {
+    foo::<{NoMatch}>();
+}

src/test/ui/const-generics/issues/issue-62579-no-match.stderr

@@ -0,0 +1,8 @@
+warning: the feature `const_generics` is incomplete and may cause the compiler to crash
+  --> $DIR/issue-62579-no-match.rs:3:12
+   |
+LL | #![feature(const_generics)]
+   |            ^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(incomplete_features)]` on by default
+