error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:6:19
   |
LL | fn f1_1(x: isize, ...) {}
   |                   ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:9:9
   |
LL | fn f1_2(...) {}
   |         ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for `extern "Rust"` functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:12:30
   |
LL | unsafe extern "Rust" fn f1_3(...) {}
   |        -------------         ^^^
   |        |
   |        `extern "Rust"` because of this
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:15:30
   |
LL | extern "C" fn f2_1(x: isize, ...) {}
   |                              ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | unsafe extern "C" fn f2_1(x: isize, ...) {}
   | ++++++

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:18:20
   |
LL | extern "C" fn f2_2(...) {}
   |                    ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | unsafe extern "C" fn f2_2(...) {}
   | ++++++

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:21:20
   |
LL | extern "C" fn f2_3(..., x: isize) {}
   |                    ^^^

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:24:30
   |
LL | extern "C" fn f3_1(x: isize, ...) {}
   |                              ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | unsafe extern "C" fn f3_1(x: isize, ...) {}
   | ++++++

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:27:20
   |
LL | extern "C" fn f3_2(...) {}
   |                    ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | unsafe extern "C" fn f3_2(...) {}
   | ++++++

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:30:20
   |
LL | extern "C" fn f3_3(..., x: isize) {}
   |                    ^^^

error: functions cannot be both `const` and C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:33:1
   |
LL | const unsafe extern "C" fn f4_1(x: isize, ...) {}
   | ^^^^^ `const` because of this             ^^^ C-variadic because of this

error: functions cannot be both `const` and C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:37:1
   |
LL | const extern "C" fn f4_2(x: isize, ...) {}
   | ^^^^^ `const` because of this      ^^^ C-variadic because of this

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:37:36
   |
LL | const extern "C" fn f4_2(x: isize, ...) {}
   |                                    ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | const unsafe extern "C" fn f4_2(x: isize, ...) {}
   |       ++++++

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:42:26
   |
LL | const extern "C" fn f4_3(..., x: isize, ...) {}
   |                          ^^^

error: functions cannot be both `const` and C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:42:1
   |
LL | const extern "C" fn f4_3(..., x: isize, ...) {}
   | ^^^^^ `const` because of this           ^^^ C-variadic because of this

error: functions with a C variable argument list must be unsafe
  --> $DIR/variadic-ffi-semantic-restrictions.rs:42:41
   |
LL | const extern "C" fn f4_3(..., x: isize, ...) {}
   |                                         ^^^
   |
help: add the `unsafe` keyword to this definition
   |
LL | const unsafe extern "C" fn f4_3(..., x: isize, ...) {}
   |       ++++++

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:48:13
   |
LL |     fn e_f2(..., x: isize);
   |             ^^^

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:55:23
   |
LL |     fn i_f1(x: isize, ...) {}
   |                       ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:57:13
   |
LL |     fn i_f2(...) {}
   |             ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:59:13
   |
LL |     fn i_f3(..., x: isize, ...) {}
   |             ^^^

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:59:28
   |
LL |     fn i_f3(..., x: isize, ...) {}
   |                            ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:62:13
   |
LL |     fn i_f4(..., x: isize, ...) {}
   |             ^^^

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:62:28
   |
LL |     fn i_f4(..., x: isize, ...) {}
   |                            ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: functions cannot be both `const` and C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:65:5
   |
LL |     const fn i_f5(x: isize, ...) {}
   |     ^^^^^                   ^^^ C-variadic because of this
   |     |
   |     `const` because of this

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:65:29
   |
LL |     const fn i_f5(x: isize, ...) {}
   |                             ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:72:23
   |
LL |     fn t_f1(x: isize, ...) {}
   |                       ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:74:23
   |
LL |     fn t_f2(x: isize, ...);
   |                       ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:76:13
   |
LL |     fn t_f3(...) {}
   |             ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` is not supported for non-extern functions
  --> $DIR/variadic-ffi-semantic-restrictions.rs:78:13
   |
LL |     fn t_f4(...);
   |             ^^^
   |
   = help: only `extern "C"` and `extern "C-unwind"` functions may have a C variable argument list

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:80:13
   |
LL |     fn t_f5(..., x: isize) {}
   |             ^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:82:13
   |
LL |     fn t_f6(..., x: isize);
   |             ^^^

error[E0493]: destructor of `VaListImpl<'_>` cannot be evaluated at compile-time
  --> $DIR/variadic-ffi-semantic-restrictions.rs:33:43
   |
LL | const unsafe extern "C" fn f4_1(x: isize, ...) {}
   |                                           ^^^   - value is dropped here
   |                                           |
   |                                           the destructor for this type cannot be evaluated in constant functions

error[E0493]: destructor of `VaListImpl<'_>` cannot be evaluated at compile-time
  --> $DIR/variadic-ffi-semantic-restrictions.rs:37:36
   |
LL | const extern "C" fn f4_2(x: isize, ...) {}
   |                                    ^^^   - value is dropped here
   |                                    |
   |                                    the destructor for this type cannot be evaluated in constant functions

error[E0493]: destructor of `VaListImpl<'_>` cannot be evaluated at compile-time
  --> $DIR/variadic-ffi-semantic-restrictions.rs:65:29
   |
LL |     const fn i_f5(x: isize, ...) {}
   |                             ^^^   - value is dropped here
   |                             |
   |                             the destructor for this type cannot be evaluated in constant functions

error: aborting due to 33 previous errors

For more information about this error, try `rustc --explain E0493`.