68 lines
2.0 KiB
Rust
68 lines
2.0 KiB
Rust
// Copyright 2013 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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// Exercise the unused_unsafe attribute in some positive and negative cases
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#![allow(dead_code)]
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#![deny(unused_unsafe)]
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#![allow(deprecated_owned_vector)]
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mod foo {
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extern {
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pub fn bar();
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}
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}
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fn callback<T>(_f: || -> T) -> T { fail!() }
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unsafe fn unsf() {}
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fn bad1() { unsafe {} } //~ ERROR: unnecessary `unsafe` block
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fn bad2() { unsafe { bad1() } } //~ ERROR: unnecessary `unsafe` block
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unsafe fn bad3() { unsafe {} } //~ ERROR: unnecessary `unsafe` block
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fn bad4() { unsafe { callback(||{}) } } //~ ERROR: unnecessary `unsafe` block
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unsafe fn bad5() { unsafe { unsf() } } //~ ERROR: unnecessary `unsafe` block
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fn bad6() {
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unsafe { // don't put the warning here
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unsafe { //~ ERROR: unnecessary `unsafe` block
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unsf()
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}
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}
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}
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unsafe fn bad7() {
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unsafe { //~ ERROR: unnecessary `unsafe` block
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unsafe { //~ ERROR: unnecessary `unsafe` block
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unsf()
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}
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}
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}
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unsafe fn good0() { unsf() }
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fn good1() { unsafe { unsf() } }
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fn good2() {
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/* bug uncovered when implementing warning about unused unsafe blocks. Be
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sure that when purity is inherited that the source of the unsafe-ness
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is tracked correctly */
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unsafe {
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unsafe fn what() -> Vec<String> { fail!() }
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callback(|| {
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what();
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});
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}
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}
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unsafe fn good3() { foo::bar() }
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fn good4() { unsafe { foo::bar() } }
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#[allow(unused_unsafe)] fn allowed() { unsafe {} }
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fn main() {}
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