src/test/ui/c-variadic/variadic-ffi-4.stderr

   1 error: lifetime may not live long enough
   2   --> $DIR/variadic-ffi-4.rs:8:5
   3    |
   4 LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
   5    |                                     --            -- has type `VaListImpl<'1>`
   6    |                                     |
   7    |                                     lifetime `'f` defined here
   8 LL |     ap
   9    |     ^^ function was supposed to return data with lifetime `'1` but it is returning data with lifetime `'f`
  10
  11 error: lifetime may not live long enough
  12   --> $DIR/variadic-ffi-4.rs:8:5
  13    |
  14 LL | pub unsafe extern "C" fn no_escape0<'f>(_: usize, ap: ...) -> VaListImpl<'f> {
  15    |                                     --            -- has type `VaListImpl<'1>`
  16    |                                     |
  17    |                                     lifetime `'f` defined here
  18 LL |     ap
  19    |     ^^ returning this value requires that `'1` must outlive `'f`
  20
  21 error: lifetime may not live long enough
  22   --> $DIR/variadic-ffi-4.rs:14:5
  23    |
  24 LL | pub unsafe extern "C" fn no_escape1(_: usize, ap: ...) -> VaListImpl<'static> {
  25    |                                               -- has type `VaListImpl<'1>`
  26 LL |     ap
  27    |     ^^ returning this value requires that `'1` must outlive `'static`
  28
  29 error: lifetime may not live long enough
  30   --> $DIR/variadic-ffi-4.rs:18:31
  31    |
  32 LL |     let _ = ap.with_copy(|ap| ap);
  33    |                           --- ^^ returning this value requires that `'1` must outlive `'2`
  34    |                           | |
  35    |                           | return type of closure is VaList<'2, '_>
  36    |                           has type `VaList<'1, '_>`
  37
  38 error: lifetime may not live long enough
  39   --> $DIR/variadic-ffi-4.rs:22:5
  40    |
  41 LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
  42    |                                               -------                   ------- has type `VaListImpl<'2>`
  43    |                                               |
  44    |                                               has type `&mut VaListImpl<'1>`
  45 LL |     *ap0 = ap1;
  46    |     ^^^^ assignment requires that `'1` must outlive `'2`
  47
  48 error: lifetime may not live long enough
  49   --> $DIR/variadic-ffi-4.rs:22:5
  50    |
  51 LL | pub unsafe extern "C" fn no_escape3(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
  52    |                                               -------                   ------- has type `VaListImpl<'2>`
  53    |                                               |
  54    |                                               has type `&mut VaListImpl<'1>`
  55 LL |     *ap0 = ap1;
  56    |     ^^^^ assignment requires that `'2` must outlive `'1`
  57
  58 error: lifetime may not live long enough
  59   --> $DIR/variadic-ffi-4.rs:28:5
  60    |
  61 LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
  62    |                                               -------                   ------- has type `VaListImpl<'2>`
  63    |                                               |
  64    |                                               has type `&mut VaListImpl<'1>`
  65 LL |     ap0 = &mut ap1;
  66    |     ^^^^^^^^^^^^^^ assignment requires that `'1` must outlive `'2`
  67    |
  68    = note: requirement occurs because of a mutable reference to VaListImpl<'_>
  69    = note: mutable references are invariant over their type parameter
  70    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
  71
  72 error: lifetime may not live long enough
  73   --> $DIR/variadic-ffi-4.rs:28:5
  74    |
  75 LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
  76    |                                               -------                   ------- has type `VaListImpl<'2>`
  77    |                                               |
  78    |                                               has type `&mut VaListImpl<'1>`
  79 LL |     ap0 = &mut ap1;
  80    |     ^^^^^^^^^^^^^^ assignment requires that `'2` must outlive `'1`
  81    |
  82    = note: requirement occurs because of a mutable reference to VaListImpl<'_>
  83    = note: mutable references are invariant over their type parameter
  84    = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
  85
  86 error[E0597]: `ap1` does not live long enough
  87   --> $DIR/variadic-ffi-4.rs:28:11
  88    |
  89 LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
  90    |                                                        - let's call the lifetime of this reference `'3`
  91 LL |     ap0 = &mut ap1;
  92    |     ------^^^^^^^^
  93    |     |     |
  94    |     |     borrowed value does not live long enough
  95    |     assignment requires that `ap1` is borrowed for `'3`
  96 ...
  97 LL | }
  98    | - `ap1` dropped here while still borrowed
  99
 100 error: lifetime may not live long enough
 101   --> $DIR/variadic-ffi-4.rs:35:12
 102    |
 103 LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
 104    |                                               -------                   ------- has type `VaListImpl<'2>`
 105    |                                               |
 106    |                                               has type `&mut VaListImpl<'1>`
 107 LL |     *ap0 = ap1.clone();
 108    |            ^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
 109
 110 error: lifetime may not live long enough
 111   --> $DIR/variadic-ffi-4.rs:35:12
 112    |
 113 LL | pub unsafe extern "C" fn no_escape5(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
 114    |                                               -------                   ------- has type `VaListImpl<'2>`
 115    |                                               |
 116    |                                               has type `&mut VaListImpl<'1>`
 117 LL |     *ap0 = ap1.clone();
 118    |            ^^^^^^^^^^^ argument requires that `'2` must outlive `'1`
 119
 120 error: aborting due to 11 previous errors
 121
 122 For more information about this error, try `rustc --explain E0597`.