Test unsatisfiable discriminant range
diff --git a/tests/ui/enum_unsatisfiable.rs b/tests/ui/enum_unsatisfiable.rs
new file mode 100644
index 0000000..6191287
--- /dev/null
+++ b/tests/ui/enum_unsatisfiable.rs
@@ -0,0 +1,9 @@
+#[cxx::bridge]
+mod ffi {
+ enum Bad {
+ A = -0xFFFF_FFFF_FFFF_FFFF,
+ B = 0xFFFF_FFFF_FFFF_FFFF,
+ }
+}
+
+fn main() {}
diff --git a/tests/ui/enum_unsatisfiable.stderr b/tests/ui/enum_unsatisfiable.stderr
new file mode 100644
index 0000000..99852ca
--- /dev/null
+++ b/tests/ui/enum_unsatisfiable.stderr
@@ -0,0 +1,8 @@
+error: these discriminant values do not fit in any supported enum repr type
+ --> $DIR/enum_unsatisfiable.rs:3:5
+ |
+3 | / enum Bad {
+4 | | A = -0xFFFF_FFFF_FFFF_FFFF,
+5 | | B = 0xFFFF_FFFF_FFFF_FFFF,
+6 | | }
+ | |_____^