Add regression test for const generic ICE in #72819

src/test/ui/const-generics/issues/issue-72819-generic-in-const-eval.rs

@@ -0,0 +1,20 @@
+// Regression test for #72819: ICE due to failure in resolving the const generic in `Arr`'s type
+// bounds.
+
+#![feature(const_generics)]
+#![allow(incomplete_features)]
+struct Arr<const N: usize>
+where Assert::<{N < usize::max_value() / 2}>: IsTrue,
+//~^ ERROR constant expression depends on a generic parameter
+{
+}
+
+enum Assert<const CHECK: bool> {}
+
+trait IsTrue {}
+
+impl IsTrue for Assert<true> {}
+
+fn main() {
+    let x: Arr<{usize::max_value()}> = Arr {};
+}

src/test/ui/const-generics/issues/issue-72819-generic-in-const-eval.stderr

@@ -0,0 +1,10 @@
+error: constant expression depends on a generic parameter
+  --> $DIR/issue-72819-generic-in-const-eval.rs:7:47
+   |
+LL | where Assert::<{N < usize::max_value() / 2}>: IsTrue,
+   |                                               ^^^^^^
+   |
+   = note: this may fail depending on what value the parameter takes
+
+error: aborting due to previous error
+