Fix const enum type issues for structs.

Author: jld

src/librustc/middle/trans/consts.rs

@@ -381,8 +381,7 @@ pub fn const_expr(cx: @crate_ctxt, e: @ast::expr) -> ValueRef {
                       }
                   })
               };
-              let llty = type_of::type_of(cx, ety);
-              C_named_struct(llty, [C_struct(cs)])
+              C_struct([C_struct(cs)])
           }
           ast::expr_vec(es, ast::m_imm) => {
             let (v, _, _) = const_vec(cx, e, es);

src/test/run-pass/const-enum-struct.rs

@@ -0,0 +1,19 @@
+// Copyright 2013 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.
+
+enum E { V16(u16), V32(u32) }
+struct S { a: E, b: u16, c: u16 }
+const C: S = S { a: V16(0xDEAD), b: 0x600D, c: 0xBAD };
+
+fn main() {
+    let n = C.b;
+    assert n != 0xBAD;
+    assert n == 0x600D;
+}

src/test/run-pass/const-enum-struct2.rs

@@ -0,0 +1,19 @@
+// Copyright 2013 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.
+
+enum E { V0, V16(u16) }
+struct S { a: E, b: u16, c: u16 }
+const C: S = S { a: V0, b: 0x600D, c: 0xBAD };
+
+fn main() {
+    let n = C.b;
+    assert n != 0xBAD;
+    assert n == 0x600D;
+}