1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/consts/const-len-underflow-subspans.rs b/src/test/ui/consts/const-len-underflow-subspans.rs
new file mode 100644
index 000000000..ed77e9078
--- /dev/null
+++ b/src/test/ui/consts/const-len-underflow-subspans.rs
@@ -0,0 +1,11 @@
+// Check that a constant-evaluation underflow highlights the correct
+// spot (where the underflow occurred).
+
+const ONE: usize = 1;
+const TWO: usize = 2;
+
+fn main() {
+    let a: [i8; ONE - TWO] = unimplemented!();
+    //~^ ERROR evaluation of constant value failed
+    //~| attempt to compute `1_usize - 2_usize`, which would overflow
+}