---

yaml
---
r: 15288
b: refs/heads/try
c: f65e26e
h: refs/heads/master
v: v3

Author: marijnh

[refs]

@@ -2,5 +2,5 @@
 refs/heads/master: 61b1875c16de39c166b0f4d54bba19f9c6777d1a
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 4a81779abd786ff22d71434c6d9a5917ea4cdfff
-refs/heads/try: 90d3f0fb5e8512a3024a7ece53c8c200e8e12e28
+refs/heads/try: f65e26eeee900a0f2f460631ac58086190ce6a4a
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105

branches/try/src/rustc/middle/trans/native.rs

@@ -780,15 +780,17 @@ fn trans_intrinsic(ccx: @crate_ctxt, decl: ValueRef, item: @ast::native_item,
       "forget" {}
       "reinterpret_cast" {
         let llout_ty = type_of::type_of(ccx, substs.tys[1]);
-        if shape::llsize_of_real(ccx, lltp_ty) !=
-           shape::llsize_of_real(ccx, llout_ty) {
+        let tp_sz = shape::llsize_of_real(ccx, lltp_ty),
+            out_sz = shape::llsize_of_real(ccx, llout_ty);
+        if tp_sz != out_sz {
             let sp = alt check ccx.tcx.items.get(option::get(ref_id)) {
               ast_map::node_expr(e) { e.span }
             };
-            ccx.sess.span_fatal(sp, "reinterpret_cast called on types \
-                                     with different size: " +
-                                ty_to_str(ccx.tcx, tp_ty) + " to " +
-                                ty_to_str(ccx.tcx, substs.tys[1]));
+            ccx.sess.span_fatal(
+                sp, #fmt("reinterpret_cast called on types \
+                          with different size: %s (%u) to %s (%u)",
+                         ty_to_str(ccx.tcx, tp_ty), tp_sz,
+                         ty_to_str(ccx.tcx, substs.tys[1]), out_sz));
         }
         if !ty::type_is_nil(substs.tys[1]) {
             let cast = PointerCast(bcx, get_param(decl, first_real_arg),