debug: remove Gc support from Repr.

Author: eddyb

src/libdebug/reflect.rs

@@ -18,7 +18,6 @@ Runtime type reflection
 
 use std::intrinsics::{Disr, Opaque, TyDesc, TyVisitor};
 use std::mem;
-use std::gc::Gc;
 
 /**
  * Trait for visitor that wishes to reflect on data.
@@ -194,9 +193,9 @@ impl<V:TyVisitor + MovePtr> TyVisitor for MovePtrAdaptor<V> {
     }
 
     fn visit_box(&mut self, mtbl: uint, inner: *const TyDesc) -> bool {
-        self.align_to::<Gc<u8>>();
+        self.align_to::<Box<u8>>();
         if ! self.inner.visit_box(mtbl, inner) { return false; }
-        self.bump_past::<Gc<u8>>();
+        self.bump_past::<Box<u8>>();
         true
     }
 

src/libdebug/repr.rs

@@ -274,13 +274,9 @@ impl<'a> TyVisitor for ReprVisitor<'a> {
         self.get::<&str>(|this, s| this.write_escaped_slice(*s))
     }
 
-    fn visit_box(&mut self, mtbl: uint, inner: *const TyDesc) -> bool {
-        try!(self, self.writer.write("box(GC) ".as_bytes()));
-        self.write_mut_qualifier(mtbl);
-        self.get::<&raw::GcBox<()>>(|this, b| {
-            let p = &b.data as *const () as *const u8;
-            this.visit_ptr_inner(p, inner)
-        })
+    fn visit_box(&mut self, _mtbl: uint, _inner: *const TyDesc) -> bool {
+        try!(self, self.writer.write("box(GC) ???".as_bytes()));
+        true
     }
 
     fn visit_uniq(&mut self, _mtbl: uint, inner: *const TyDesc) -> bool {