let vt = tvec::vec_types(bcx, base_datum.ty);
base::maybe_name_value(bcx.ccx(), vt.llunit_size, "unit_sz");
- let scaled_ix = Mul(bcx, ix_val, vt.llunit_size);
- base::maybe_name_value(bcx.ccx(), scaled_ix, "scaled_ix");
let (bcx, base, len) =
base_datum.get_vec_base_and_len(bcx, index_expr.span,
debug2!("trans_index: base {}", bcx.val_to_str(base));
debug2!("trans_index: len {}", bcx.val_to_str(len));
- let bounds_check = ICmp(bcx, lib::llvm::IntUGE, scaled_ix, len);
+ let unscaled_len = UDiv(bcx, len, vt.llunit_size);
+ let bounds_check = ICmp(bcx, lib::llvm::IntUGE, ix_val, unscaled_len);
let bcx = do with_cond(bcx, bounds_check) |bcx| {
- let unscaled_len = UDiv(bcx, len, vt.llunit_size);
controlflow::trans_fail_bounds_check(bcx, index_expr.span,
ix_val, unscaled_len)
};
--- /dev/null
+// Copyright 2013 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.
+
+// error-pattern:index out of bounds: the len is 3 but the index is
+
+use std::uint::max_value;
+use std::sys::size_of;
+
+fn main() {
+ let xs = [1, 2, 3];
+ xs[max_value / size_of::<int>() + 1];
+}