62 lines
1.7 KiB
Rust
62 lines
1.7 KiB
Rust
// FIXME: This file is tracking old lint behavior that's still unchanged in the
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// unstable -Zthir-unsafeck implementation. See lint-unused-unsafe.rs for more details.
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//
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// Exercise the unused_unsafe attribute in some positive and negative cases
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// compile-flags: -Zthir-unsafeck
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#![allow(dead_code)]
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#![deny(unused_unsafe)]
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mod foo {
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extern "C" {
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pub fn bar();
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}
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}
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fn callback<T, F>(_f: F) -> T where F: FnOnce() -> T { panic!() }
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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() } }
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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 {
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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> { panic!() }
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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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