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Diffstat (limited to 'src/test/ui/dropck/dropck-eyepatch-extern-crate.rs')
-rw-r--r-- | src/test/ui/dropck/dropck-eyepatch-extern-crate.rs | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/src/test/ui/dropck/dropck-eyepatch-extern-crate.rs b/src/test/ui/dropck/dropck-eyepatch-extern-crate.rs deleted file mode 100644 index b8f303554..000000000 --- a/src/test/ui/dropck/dropck-eyepatch-extern-crate.rs +++ /dev/null @@ -1,82 +0,0 @@ -// aux-build:dropck_eyepatch_extern_crate.rs - -// 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 attribute's 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. -extern crate dropck_eyepatch_extern_crate as other; - -use other::{Dt,Dr,Pt,Pr,St,Sr}; - -fn main() { - use std::cell::Cell; - - // We use separate blocks with separate variable to prevent the error - // messages from being deduplicated. - - { - let c_long; - let (mut dt, mut dr): (Dt<_>, Dr<_>); - c_long = Cell::new(1); - - // No error: sufficiently long-lived state can be referenced in dtors - dt = Dt("dt", &c_long); - dr = Dr("dr", &c_long); - } - - { - let (c, mut dt, mut dr): (Cell<_>, Dt<_>, Dr<_>); - c = Cell::new(1); - - // No Error: destructor order precisely modelled - dt = Dt("dt", &c); - dr = Dr("dr", &c); - } - - { - let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>); - c_shortest = Cell::new(1); - - // Error: `c_shortest` dies too soon for the references in dtors to be valid. - dt = Dt("dt", &c_shortest); - //~^ ERROR `c_shortest` does not live long enough - dr = Dr("dr", &c_shortest); - } - - { - let c_long; - let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>); - c_long = Cell::new(1); - c_shortest = Cell::new(1); - - // No error: Drop impl asserts .1 (A and &'a _) are not accessed - pt = Pt("pt", &c_shortest, &c_long); - pr = Pr("pr", &c_shortest, &c_long); - } - - { - let c_long; - let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>); - c_long = Cell::new(1); - c_shortest = Cell::new(1); - // Error: Drop impl's assertion does not apply to `B` nor `&'b _` - pt = Pt("pt", &c_long, &c_shortest); - //~^ ERROR `c_shortest` does not live long enough - pr = Pr("pr", &c_long, &c_shortest); - } - - { - let (st, sr, c_shortest): (St<_>, Sr<_>, Cell<_>); - c_shortest = Cell::new(1); - // No error: St and Sr have no destructor. - st = St("st", &c_shortest); - sr = Sr("sr", &c_shortest); - } -} - -fn use_imm<T>(_: &T) { } |