Fix ICE when using a pointer cast as array size

This commit is contained in:
varkor 2018-07-12 09:10:39 -07:00
parent c946c2539e
commit e93de9556a
3 changed files with 28 additions and 1 deletions

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@ -20,6 +20,7 @@ use ty::{self, Ty, TyCtxt, TypeFoldable};
use ty::error::{ExpectedFound, TypeError}; use ty::error::{ExpectedFound, TypeError};
use mir::interpret::GlobalId; use mir::interpret::GlobalId;
use util::common::ErrorReported; use util::common::ErrorReported;
use syntax_pos::DUMMY_SP;
use std::rc::Rc; use std::rc::Rc;
use std::iter; use std::iter;
use rustc_target::spec::abi; use rustc_target::spec::abi;
@ -503,7 +504,11 @@ pub fn super_relate_tys<'a, 'gcx, 'tcx, R>(relation: &mut R,
"array length could not be evaluated"); "array length could not be evaluated");
Err(ErrorReported) Err(ErrorReported)
} }
_ => bug!("arrays should not have {:?} as length", x) _ => {
tcx.sess.delay_span_bug(DUMMY_SP,
&format!("arrays should not have {:?} as length", x));
Err(ErrorReported)
}
} }
}; };
match (to_u64(sz_a), to_u64(sz_b)) { match (to_u64(sz_a), to_u64(sz_b)) {

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@ -0,0 +1,13 @@
// Copyright 2018 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.
fn main() {
let _ = [0; (&0 as *const i32) as usize]; //~ ERROR raw pointers cannot be cast
}

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@ -0,0 +1,9 @@
error[E0018]: raw pointers cannot be cast to integers in constants
--> $DIR/issue-52023-array-size-pointer-cast.rs:12:17
|
LL | let _ = [0; (&0 as *const i32) as usize]; //~ ERROR raw pointers cannot be cast
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to previous error
For more information about this error, try `rustc --explain E0018`.