Fixed ICEs with pattern matching in const fn. Fixes #38199, fixes #31577, fixes #29093, and fixes #40012.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/test/compile-fail/const-match-pattern-arm.rs b/src/test/compile-fail/const-match-pattern-arm.rs
new file mode 100644
index 00000000000..452aa87d6ba
--- /dev/null
+++ b/src/test/compile-fail/const-match-pattern-arm.rs
@@ -0,0 +1,25 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+const x: bool = match Some(true) {
+    Some(value) => true,
+    //~^ ERROR: constant contains unimplemented expression type [E0019]
+    _ => false
+};
+
+const y: bool = {
+    match Some(true) {
+        Some(value) => true,
+        //~^ ERROR: constant contains unimplemented expression type [E0019]
+        _ => false
+    }
+};
+
+fn main() {}