diff --git a/src/comp/middle/trans.rs b/src/comp/middle/trans.rs index e19c028e6dc..893614cac9a 100644 --- a/src/comp/middle/trans.rs +++ b/src/comp/middle/trans.rs @@ -2478,13 +2478,19 @@ fn trans_for(cx: &@block_ctxt, local: &@ast::local, seq: &@ast::expr, fn inner(cx: &@block_ctxt, local: @ast::local, curr: ValueRef, t: ty::t, body: &ast::blk, outer_next_cx: @block_ctxt) -> @block_ctxt { let next_cx = new_sub_block_ctxt(cx, "next"); - let bcx = new_loop_scope_block_ctxt(cx, option::some(next_cx), - outer_next_cx, "for loop scope"); - Br(cx, bcx.llbb); - let val = PointerCast(bcx, curr, T_ptr(type_of_or_i8(cx, t))); - let bcx = trans_alt::bind_irrefutable_pat(bcx, local.node.pat, val, + let scope_cx = + new_loop_scope_block_ctxt(cx, + option::some::<@block_ctxt>(next_cx), + outer_next_cx, "for loop scope"); + Br(cx, scope_cx.llbb); + let {bcx, val: dst} = alloc_local(scope_cx, local); + let val = load_if_immediate(bcx, PointerCast(bcx, curr, + val_ty(dst)), t); + let bcx = copy_val(bcx, INIT, dst, val, t); + add_clean(scope_cx, dst, t); + let bcx = trans_alt::bind_irrefutable_pat(bcx, local.node.pat, dst, cx.fcx.lllocals, false); - let bcx = trans_block(bcx, body, return).bcx; + bcx = trans_block(bcx, body, return).bcx; if !is_terminated(bcx) { Br(bcx, next_cx.llbb); // otherwise, this code is unreachable