Fix pointer consts to work with enums

Author: jld

src/librustc/middle/trans/consts.rs

@@ -352,10 +352,8 @@ pub fn const_expr(cx: @crate_ctxt, e: @ast::expr) -> ValueRef {
           }
           ast::expr_addr_of(ast::m_imm, sub) => {
             let cv = const_expr(cx, sub);
-            let subty = ty::expr_ty(cx.tcx, sub),
-            llty = type_of::type_of(cx, subty);
             let gv = do str::as_c_str("const") |name| {
-                llvm::LLVMAddGlobal(cx.llmod, llty, name)
+                llvm::LLVMAddGlobal(cx.llmod, val_ty(cv), name)
             };
             llvm::LLVMSetInitializer(gv, cv);
             llvm::LLVMSetGlobalConstant(gv, True);

src/test/run-pass/const-enum-ptr.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, V1(int) }
+const C: &static/E = &V0;
+
+fn main() {
+    match *C {
+        V0 => (),
+        _ => die!()
+    }
+}