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mir-borrowck: Test for check_access_permissions()

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This commit is contained in:
Basile Desloges 2017-10-21 21:15:28 +02:00
parent 37e08a5dca
commit cbad2e5720
2 changed files with 82 additions and 1 deletions
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7
src/test/compile-fail/E0596.rs
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@ -8,7 +8,12 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// revisions: ast mir
//[mir]compile-flags: -Z emit-end-regions -Z borrowck-mir
fn main() {
let x = 1;
let y = &mut x; //~ ERROR E0596
let y = &mut x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
}

76
src/test/compile-fail/borrowck/borrowck-access-permissions.rs Normal file
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@ -0,0 +1,76 @@
// Copyright 2016 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.
// revisions: ast mir
//[mir]compile-flags: -Z emit-end-regions -Z borrowck-mir
static static_x : i32 = 1;
static mut static_x_mut : i32 = 1;
fn main() {
let x = 1;
let mut x_mut = 1;
{ // borrow of local
let _y1 = &mut x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
let _y2 = &mut x_mut; // No error
}
{ // borrow of static
let _y1 = &mut static_x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
unsafe { let _y2 = &mut static_x_mut; } // No error
}
{ // borrow of deref to box
let box_x = Box::new(1);
let mut box_x_mut = Box::new(1);
let _y1 = &mut *box_x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
let _y2 = &mut *box_x_mut; // No error
}
{ // borrow of deref to reference
let ref_x = &x;
let ref_x_mut = &mut x_mut;
let _y1 = &mut *ref_x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
let _y2 = &mut *ref_x_mut; // No error
}
{ // borrow of deref to pointer
let ptr_x : *const _ = &x;
let ptr_mut_x : *mut _ = &mut x_mut;
unsafe {
let _y1 = &mut *ptr_x; //[ast]~ ERROR [E0596]
//[mir]~^ ERROR (Ast) [E0596]
//[mir]~| ERROR (Mir) [E0596]
let _y2 = &mut *ptr_mut_x; // No error
}
}
{ // borrowing mutably through an immutable reference
struct Foo<'a> { f: &'a mut i32, g: &'a i32 };
let mut foo = Foo { f: &mut x_mut, g: &x };
let foo_ref = &foo;
let _y = &mut *foo_ref.f; //[ast]~ ERROR [E0389]
//[mir]~^ ERROR (Ast) [E0389]
//[mir]~| ERROR (Mir) [E0596]
// FIXME: Wrong error in MIR
}
}