Allow @cast failures to get optimized away

We have the saved_conversion_error field, but I wasn't using it.  Now
@cast errors are saved in that field, so they're only seen if the
optimizer doesn't remove the @cast.

1 files changed, 1 insertions, 1 deletions

diff --git a/elaborate.cxx b/elaborate.cxx
index 6fb3f197..7c4a5fca 100644
--- a/elaborate.cxx
+++ b/elaborate.cxx
@@ -3448,7 +3448,7 @@ typeresolution_info::visit_cast_op (cast_op* e)
   if (e->saved_conversion_error)
     throw (* (e->saved_conversion_error));
   else
-    throw semantic_error("unresolved cast expression", e->tok);
+    throw semantic_error("type definition '" + e->type + "' not found", e->tok);
 }