if is_rust_fn {
let mut llargs = Vec::new();
- if let (ty::FnConverging(ret_ty), Some(llretslot)) = (ret_ty, opt_llretslot) {
+ if let (ty::FnConverging(ret_ty), Some(mut llretslot)) = (ret_ty, opt_llretslot) {
if type_of::return_uses_outptr(ccx, ret_ty) {
+ let llformal_ret_ty = type_of::type_of(ccx, ret_ty).ptr_to();
+ let llret_ty = common::val_ty(llretslot);
+ if llformal_ret_ty != llret_ty {
+ // this could happen due to e.g. subtyping
+ debug!("casting actual return type ({}) to match formal ({})",
+ bcx.llty_str(llret_ty), bcx.llty_str(llformal_ret_ty));
+ llretslot = PointerCast(bcx, llretslot, llformal_ret_ty);
+ }
llargs.push(llretslot);
}
}
--- /dev/null
+// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#![feature(rustc_attrs)]
+#![allow(warnings)]
+
+pub fn fail(x: Option<& (Iterator+Send)>) -> Option<&Iterator> {
+ // This call used to trigger an LLVM assertion because the return slot had type
+ // "Option<&Iterator>"* instead of "Option<&(Iterator+Send)>"*
+ inner(x)
+}
+
+pub fn inner(x: Option<& (Iterator+Send)>) -> Option<&(Iterator+Send)> {
+ x
+}
+
+#[rustc_error]
+fn main() {} //~ ERROR compilation successful