librustc: Fix bug with newtype structs containing dtors

Author: pcwalton

src/librustc/middle/trans/datum.rs

@@ -679,7 +679,6 @@ pub impl Datum {
                 }
 
                 let repr = adt::represent_type(ccx, self.ty);
-                fail_unless!(adt::is_newtypeish(repr));
                 let ty = ty::subst(ccx.tcx, substs, variants[0].args[0]);
                 return match self.mode {
                     ByRef => {
@@ -719,7 +718,6 @@ pub impl Datum {
                 }
 
                 let repr = adt::represent_type(ccx, self.ty);
-                fail_unless!(adt::is_newtypeish(repr));
                 let ty = fields[0].mt.ty;
                 return match self.mode {
                     ByRef => {

src/test/run-pass/newtype-struct-with-dtor.rs

@@ -0,0 +1,17 @@
+use core::libc::c_int;
+use core::libc;
+
+pub struct Fd(c_int);
+
+impl Drop for Fd {
+    fn finalize(&self) {
+        unsafe {
+            libc::close(**self);
+        }
+    }
+}
+
+fn main() {
+}
+
+