1 files changed, 114 insertions, 0 deletions
diff --git a/src/test/ui/discrim/discrim-ill-typed.rs b/src/test/ui/discrim/discrim-ill-typed.rs
new file mode 100644
index 000000000..3cf0ea0e6
--- /dev/null
+++ b/src/test/ui/discrim/discrim-ill-typed.rs
@@ -0,0 +1,114 @@
+// When explicit discriminant value has
+// a type that does not match the representation
+// type, rustc should fail gracefully.
+
+// See also run-pass/discrim-explicit-23030.rs where the input types
+// are correct.
+
+#![allow(dead_code, unused_variables, unused_imports)]
+
+fn f_i8() {
+    #[repr(i8)]
+    enum A {
+        Ok = i8::MAX - 1,
+        Ok2,
+        OhNo = 0_u8,
+        //~^ ERROR mismatched types
+        //~| expected `i8`, found `u8`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_u8() {
+    #[repr(u8)]
+    enum A {
+        Ok = u8::MAX - 1,
+        Ok2,
+        OhNo = 0_i8,
+        //~^ ERROR mismatched types
+        //~| expected `u8`, found `i8`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_i16() {
+    #[repr(i16)]
+    enum A {
+        Ok = i16::MAX - 1,
+        Ok2,
+        OhNo = 0_u16,
+        //~^ ERROR mismatched types
+        //~| expected `i16`, found `u16`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_u16() {
+    #[repr(u16)]
+    enum A {
+        Ok = u16::MAX - 1,
+        Ok2,
+        OhNo = 0_i16,
+        //~^ ERROR mismatched types
+        //~| expected `u16`, found `i16`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_i32() {
+    #[repr(i32)]
+    enum A {
+        Ok = i32::MAX - 1,
+        Ok2,
+        OhNo = 0_u32,
+        //~^ ERROR mismatched types
+        //~| expected `i32`, found `u32`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_u32() {
+    #[repr(u32)]
+    enum A {
+        Ok = u32::MAX - 1,
+        Ok2,
+        OhNo = 0_i32,
+        //~^ ERROR mismatched types
+        //~| expected `u32`, found `i32`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_i64() {
+    #[repr(i64)]
+    enum A {
+        Ok = i64::MAX - 1,
+        Ok2,
+        OhNo = 0_u64,
+        //~^ ERROR mismatched types
+        //~| expected `i64`, found `u64`
+    }
+
+    let x = A::Ok;
+}
+
+fn f_u64() {
+    #[repr(u64)]
+    enum A {
+        Ok = u64::MAX - 1,
+        Ok2,
+        OhNo = 0_i64,
+        //~^ ERROR mismatched types
+        //~| expected `u64`, found `i64`
+    }
+
+    let x = A::Ok;
+}
+
+fn main() { }