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153 lines
8.0 KiB
Plaintext
153 lines
8.0 KiB
Plaintext
error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:8:5
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LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
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| -- -- has type `VaListImpl<'1>`
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| lifetime `'f` defined here
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LL | ap
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| ^^ function was supposed to return data with lifetime `'1` but it is returning data with lifetime `'f`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:8:5
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LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
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| -- -- has type `VaListImpl<'1>`
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| lifetime `'f` defined here
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LL | ap
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| ^^ function was supposed to return data with lifetime `'f` but it is returning data with lifetime `'1`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:14:5
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LL | pub unsafe extern "C" fn no_escape1(_: usize, ap: ...) -> VaListImpl<'static> {
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| -- has type `VaListImpl<'1>`
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LL | ap
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| ^^ returning this value requires that `'1` must outlive `'static`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:18:31
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LL | let _ = ap.with_copy(|ap| ap);
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| --- ^^ returning this value requires that `'1` must outlive `'2`
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| | |
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| | return type of closure is VaList<'2, '_>
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| has type `VaList<'1, '_>`
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:22:5
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LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| |
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| has type `&mut VaListImpl<'1>`
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LL | *ap0 = ap1;
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| ^^^^ assignment requires that `'1` must outlive `'2`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:22:5
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LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| has type `&mut VaListImpl<'1>`
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LL | *ap0 = ap1;
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| ^^^^ assignment requires that `'2` must outlive `'1`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:28:5
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LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| |
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| has type `&mut VaListImpl<'1>`
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LL | ap0 = &mut ap1;
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| ^^^^^^^^^^^^^^ assignment requires that `'1` must outlive `'2`
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= note: requirement occurs because of a mutable reference to `VaListImpl<'_>`
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= note: mutable references are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:28:5
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LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| |
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| has type `&mut VaListImpl<'1>`
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LL | ap0 = &mut ap1;
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| ^^^^^^^^^^^^^^ assignment requires that `'2` must outlive `'1`
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= note: requirement occurs because of a mutable reference to `VaListImpl<'_>`
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= note: mutable references are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error[E0597]: `ap1` does not live long enough
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--> $DIR/variadic-ffi-4.rs:28:11
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LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| - ------- binding `ap1` declared here
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| |
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| let's call the lifetime of this reference `'3`
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LL | ap0 = &mut ap1;
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| ------^^^^^^^^
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| | |
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| | borrowed value does not live long enough
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| assignment requires that `ap1` is borrowed for `'3`
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...
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LL | }
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| - `ap1` dropped here while still borrowed
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:35:12
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LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| has type `&mut VaListImpl<'1>`
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LL | *ap0 = ap1.clone();
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| ^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/variadic-ffi-4.rs:35:12
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LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
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| ------- ------- has type `VaListImpl<'2>`
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| has type `&mut VaListImpl<'1>`
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LL | *ap0 = ap1.clone();
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| ^^^^^^^^^^^ argument requires that `'2` must outlive `'1`
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= note: requirement occurs because of the type `VaListImpl<'_>`, which makes the generic argument `'_` invariant
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= note: the struct `VaListImpl<'f>` is invariant over the parameter `'f`
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: aborting due to 11 previous errors
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For more information about this error, try `rustc --explain E0597`.
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