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+++ b/tests/ui/consts/const-eval/const-eval-overflow-3b.stderr
@@ -0,0 +1,23 @@
+error[E0308]: mismatched types
+  --> $DIR/const-eval-overflow-3b.rs:16:22
+   |
+LL |     = [0; (i8::MAX + 1u8) as usize];
+   |                      ^^^ expected `i8`, found `u8`
+
+error[E0277]: cannot add `u8` to `i8` in const contexts
+  --> $DIR/const-eval-overflow-3b.rs:16:20
+   |
+LL |     = [0; (i8::MAX + 1u8) as usize];
+   |                    ^ no implementation for `i8 + u8`
+   |
+   = help: the trait `~const Add<u8>` is not implemented for `i8`
+   = help: the following other types implement trait `Add<Rhs>`:
+             <&'a i8 as Add<i8>>
+             <&i8 as Add<&i8>>
+             <i8 as Add<&i8>>
+             <i8 as Add>
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0277, E0308.
+For more information about an error, try `rustc --explain E0277`.