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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs')
-rw-r--r-- | src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs b/src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs deleted file mode 100644 index 270d5de7a..000000000 --- a/src/test/ui/drop/auxiliary/dropck_eyepatch_extern_crate.rs +++ /dev/null @@ -1,50 +0,0 @@ -#![feature(dropck_eyepatch)] - -// The point of this test is to illustrate that the `#[may_dangle]` -// attribute specifically allows, in the context of a type -// implementing `Drop`, a generic parameter to be instantiated with a -// lifetime that does not strictly outlive the owning type itself, -// and that this attributes effects are preserved when importing -// the type from another crate. -// -// See also dropck-eyepatch.rs for more information about the general -// structure of the test. - -use std::cell::RefCell; - -pub trait Foo { fn foo(&self, _: &str); } - -pub struct Dt<A: Foo>(pub &'static str, pub A); -pub struct Dr<'a, B:'a+Foo>(pub &'static str, pub &'a B); -pub struct Pt<A,B: Foo>(pub &'static str, pub A, pub B); -pub struct Pr<'a, 'b, B:'a+'b+Foo>(pub &'static str, pub &'a B, pub &'b B); -pub struct St<A: Foo>(pub &'static str, pub A); -pub struct Sr<'a, B:'a+Foo>(pub &'static str, pub &'a B); - -impl<A: Foo> Drop for Dt<A> { - fn drop(&mut self) { println!("drop {}", self.0); self.1.foo(self.0); } -} -impl<'a, B: Foo> Drop for Dr<'a, B> { - fn drop(&mut self) { println!("drop {}", self.0); self.1.foo(self.0); } -} -unsafe impl<#[may_dangle] A, B: Foo> Drop for Pt<A, B> { - // (unsafe to access self.1 due to #[may_dangle] on A) - fn drop(&mut self) { println!("drop {}", self.0); self.2.foo(self.0); } -} -unsafe impl<#[may_dangle] 'a, 'b, B: Foo> Drop for Pr<'a, 'b, B> { - // (unsafe to access self.1 due to #[may_dangle] on 'a) - fn drop(&mut self) { println!("drop {}", self.0); self.2.foo(self.0); } -} - -impl Foo for RefCell<String> { - fn foo(&self, s: &str) { - let s2 = format!("{}|{}", *self.borrow(), s); - *self.borrow_mut() = s2; - } -} - -impl<'a, T:Foo> Foo for &'a T { - fn foo(&self, s: &str) { - (*self).foo(s); - } -} |