&format!("comparison of `{}`",
cx.ty_to_string(rhs_t))[],
StrEqFnLangItem);
- callee::trans_lang_call(cx, did, &[lhs, rhs], None, debug_loc)
+ let t = ty::mk_str_slice(cx.tcx(), cx.tcx().mk_region(ty::ReStatic), ast::MutImmutable);
+ // The comparison function gets the slices by value, so we have to make copies here. Even
+ // if the function doesn't write through the pointer, things like lifetime intrinsics
+ // require that we do this properly
+ let lhs_arg = alloc_ty(cx, t, "lhs");
+ let rhs_arg = alloc_ty(cx, t, "rhs");
+ memcpy_ty(cx, lhs_arg, lhs, t);
+ memcpy_ty(cx, rhs_arg, rhs, t);
+ let res = callee::trans_lang_call(cx, did, &[lhs_arg, rhs_arg], None, debug_loc);
+ call_lifetime_end(res.bcx, lhs_arg);
+ call_lifetime_end(res.bcx, rhs_arg);
+
+ res
}
let _icx = push_ctxt("compare_values");
--- /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.
+
+pub fn main() {
+ let command = "a";
+
+ match command {
+ "foo" => println!("foo"),
+ _ => println!("{}", command),
+ }
+}