error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:5:19
   |
LL | fn f1_1(x: isize, ...) {}
   |                   ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:8:9
   |
LL | fn f1_2(...) {}
   |         ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:8:9
   |
LL | fn f1_2(...) {}
   |         ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:12:30
   |
LL | extern "C" fn f2_1(x: isize, ...) {}
   |                              ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:15:20
   |
LL | extern "C" fn f2_2(...) {}
   |                    ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:15:20
   |
LL | extern "C" fn f2_2(...) {}
   |                    ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:19:20
   |
LL | extern "C" fn f2_3(..., x: isize) {}
   |                    ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:19:20
   |
LL | extern "C" fn f2_3(..., x: isize) {}
   |                    ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:23:26
   |
LL | extern fn f3_1(x: isize, ...) {}
   |                          ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:26:16
   |
LL | extern fn f3_2(...) {}
   |                ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:26:16
   |
LL | extern fn f3_2(...) {}
   |                ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:30:16
   |
LL | extern fn f3_3(..., x: isize) {}
   |                ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:30:16
   |
LL | extern fn f3_3(..., x: isize) {}
   |                ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:35:13
   |
LL |     fn e_f1(...);
   |             ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:37:13
   |
LL |     fn e_f2(..., x: isize);
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:44:23
   |
LL |     fn i_f1(x: isize, ...) {}
   |                       ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:46:13
   |
LL |     fn i_f2(...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:46:13
   |
LL |     fn i_f2(...) {}
   |             ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:49:13
   |
LL |     fn i_f3(..., x: isize, ...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:49:13
   |
LL |     fn i_f3(..., x: isize, ...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:49:28
   |
LL |     fn i_f3(..., x: isize, ...) {}
   |                            ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:53:13
   |
LL |     fn i_f4(..., x: isize, ...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:53:13
   |
LL |     fn i_f4(..., x: isize, ...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:53:28
   |
LL |     fn i_f4(..., x: isize, ...) {}
   |                            ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:60:23
   |
LL |     fn t_f1(x: isize, ...) {}
   |                       ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:62:23
   |
LL |     fn t_f2(x: isize, ...);
   |                       ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:64:13
   |
LL |     fn t_f3(...) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:64:13
   |
LL |     fn t_f3(...) {}
   |             ^^^^

error: C-variadic function must be declared with at least one named argument
  --> $DIR/variadic-ffi-semantic-restrictions.rs:67:13
   |
LL |     fn t_f4(...);
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:67:13
   |
LL |     fn t_f4(...);
   |             ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:70:13
   |
LL |     fn t_f5(..., x: isize) {}
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:70:13
   |
LL |     fn t_f5(..., x: isize) {}
   |             ^^^^

error: `...` must be the last argument of a C-variadic function
  --> $DIR/variadic-ffi-semantic-restrictions.rs:73:13
   |
LL |     fn t_f6(..., x: isize);
   |             ^^^^

error: only foreign or `unsafe extern "C" functions may be C-variadic
  --> $DIR/variadic-ffi-semantic-restrictions.rs:73:13
   |
LL |     fn t_f6(..., x: isize);
   |             ^^^^

error: aborting due to 34 previous errors