55 lines
1.8 KiB
Rust
55 lines
1.8 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// compile-flags: -Zforce-overflow-checks=on
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// these errors are not actually "const_err", they occur in trans/consts
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// and are unconditional warnings that can't be denied or allowed
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#![allow(exceeding_bitshifts)]
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#![allow(const_err)]
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fn black_box<T>(_: T) {
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unimplemented!()
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}
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// Make sure that the two uses get two errors.
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const FOO: u8 = [5u8][1];
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//~^ ERROR constant evaluation error
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//~| index out of bounds: the len is 1 but the index is 1
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//~^^^ ERROR constant evaluation error
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//~| index out of bounds: the len is 1 but the index is 1
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fn main() {
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let a = -std::i8::MIN;
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//~^ WARN this expression will panic at run-time
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//~| attempt to negate with overflow
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let b = 200u8 + 200u8 + 200u8;
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//~^ WARN this expression will panic at run-time
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//~| attempt to add with overflow
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//~^^^ WARN this expression will panic at run-time
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//~| attempt to add with overflow
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let c = 200u8 * 4;
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//~^ WARN this expression will panic at run-time
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//~| attempt to multiply with overflow
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let d = 42u8 - (42u8 + 1);
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//~^ WARN this expression will panic at run-time
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//~| attempt to subtract with overflow
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let _e = [5u8][1];
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//~^ WARN this expression will panic at run-time
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//~| index out of bounds: the len is 1 but the index is 1
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black_box(a);
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black_box(b);
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black_box(c);
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black_box(d);
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black_box((FOO, FOO));
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}
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