1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/consts/const-eval/issue-44578.rs b/src/test/ui/consts/const-eval/issue-44578.rs
new file mode 100644
index 000000000..a88e21970
--- /dev/null
+++ b/src/test/ui/consts/const-eval/issue-44578.rs
@@ -0,0 +1,29 @@
+// build-fail
+
+#![allow(const_err)]
+
+trait Foo {
+    const AMT: usize;
+}
+
+enum Bar<A, B> {
+    First(A),
+    Second(B),
+}
+
+impl<A: Foo, B: Foo> Foo for Bar<A, B> {
+    const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
+}
+
+impl Foo for u8 {
+    const AMT: usize = 1;
+}
+
+impl Foo for u16 {
+    const AMT: usize = 2;
+}
+
+fn main() {
+    println!("{}", <Bar<u16, u8> as Foo>::AMT);
+    //~^ ERROR evaluation of constant value failed
+}