7828c3dd28
https://github.com/rust-lang/rfcs/pull/221 The current terminology of "task failure" often causes problems when writing or speaking about code. You often want to talk about the possibility of an operation that returns a Result "failing", but cannot because of the ambiguity with task failure. Instead, you have to speak of "the failing case" or "when the operation does not succeed" or other circumlocutions. Likewise, we use a "Failure" header in rustdoc to describe when operations may fail the task, but it would often be helpful to separate out a section describing the "Err-producing" case. We have been steadily moving away from task failure and toward Result as an error-handling mechanism, so we should optimize our terminology accordingly: Result-producing functions should be easy to describe. To update your code, rename any call to `fail!` to `panic!` instead. Assuming you have not created your own macro named `panic!`, this will work on UNIX based systems: grep -lZR 'fail!' . | xargs -0 -l sed -i -e 's/fail!/panic!/g' You can of course also do this by hand. [breaking-change]
143 lines
3.2 KiB
Rust
143 lines
3.2 KiB
Rust
// Copyright 2014 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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struct Foo {
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bar1: Bar,
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bar2: Bar
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}
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struct Bar {
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int1: int,
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int2: int,
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}
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fn make_foo() -> Box<Foo> { panic!() }
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fn borrow_same_field_twice_mut_mut() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1;
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let _bar2 = &mut foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_same_field_twice_mut_imm() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1;
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let _bar2 = &foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_same_field_twice_imm_mut() {
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let mut foo = make_foo();
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let bar1 = &foo.bar1;
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let _bar2 = &mut foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_same_field_twice_imm_imm() {
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let mut foo = make_foo();
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let bar1 = &foo.bar1;
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let _bar2 = &foo.bar1;
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*bar1;
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}
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fn borrow_both_fields_mut() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1;
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let _bar2 = &mut foo.bar2; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_both_mut_pattern() {
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let mut foo = make_foo();
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match *foo {
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Foo { bar1: ref mut _bar1, bar2: ref mut _bar2 } => {}
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//~^ ERROR cannot borrow
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}
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}
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fn borrow_var_and_pattern() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1;
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match *foo {
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Foo { bar1: ref mut _bar1, bar2: _ } => {}
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//~^ ERROR cannot borrow
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}
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*bar1;
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}
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fn borrow_mut_and_base_imm() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1.int1;
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let _foo1 = &foo.bar1; //~ ERROR cannot borrow
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let _foo2 = &*foo; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_mut_and_base_mut() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1.int1;
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let _foo1 = &mut foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_mut_and_base_mut2() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1.int1;
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let _foo2 = &mut *foo; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_imm_and_base_mut() {
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let mut foo = make_foo();
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let bar1 = &foo.bar1.int1;
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let _foo1 = &mut foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_imm_and_base_mut2() {
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let mut foo = make_foo();
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let bar1 = &foo.bar1.int1;
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let _foo2 = &mut *foo; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_imm_and_base_imm() {
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let mut foo = make_foo();
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let bar1 = &foo.bar1.int1;
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let _foo1 = &foo.bar1;
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let _foo2 = &*foo;
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*bar1;
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}
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fn borrow_mut_and_imm() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1;
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let _foo1 = &foo.bar2; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_mut_from_imm() {
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let foo = make_foo();
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let bar1 = &mut foo.bar1; //~ ERROR cannot borrow
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*bar1;
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}
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fn borrow_long_path_both_mut() {
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let mut foo = make_foo();
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let bar1 = &mut foo.bar1.int1;
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let foo1 = &mut foo.bar2.int2; //~ ERROR cannot borrow
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*bar1;
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*foo1;
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}
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fn main() {}
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