Throw type into semantic_error message of @cast when not found.

* tapsets.cxx (dwarf_cast_expanding_visitor::visit_cast_op):
  Add type to msg added to semantic_error when thrown.

1 files changed, 2 insertions, 1 deletions

diff --git a/tapsets.cxx b/tapsets.cxx
index 6de6271b..103c39fa 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -5067,7 +5067,8 @@ void dwarf_cast_expanding_visitor::visit_cast_op (cast_op* e)
       // cast_op to the next pass.  We hope that this value ends
       // up not being referenced after all, so it can be optimized out
       // quietly.
-      semantic_error* er = new semantic_error ("type definition not found", e->tok);
+      string msg = "type definition '" + e->type + "' not found";
+      semantic_error* er = new semantic_error (msg, e->tok);
       // NB: we can have multiple errors, since a @cast
       // may be expanded in several different contexts:
       //     function ("*") { @cast(...) }