error[E0045]: C-variadic function must have C or cdecl calling convention
  --> $DIR/variadic-ffi-1.rs:5:5
   |
LL |     fn printf(_: *const u8, ...);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ C-variadics require C or cdecl calling convention

error[E0060]: this function takes at least 2 parameters but 0 parameters were supplied
  --> $DIR/variadic-ffi-1.rs:16:9
   |
LL |     fn foo(f: isize, x: u8, ...);
   |     ----------------------------- defined here
...
LL |         foo();
   |         ^^^^^ expected at least 2 parameters

error[E0060]: this function takes at least 2 parameters but 1 parameter was supplied
  --> $DIR/variadic-ffi-1.rs:17:9
   |
LL |     fn foo(f: isize, x: u8, ...);
   |     ----------------------------- defined here
...
LL |         foo(1);
   |         ^^^^^^ expected at least 2 parameters

error[E0308]: mismatched types
  --> $DIR/variadic-ffi-1.rs:19:56
   |
LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
   |                                                        ^^^ expected non-variadic fn, found variadic function
   |
   = note: expected type `unsafe extern "C" fn(isize, u8)`
              found type `for<'r> unsafe extern "C" fn(isize, u8, std::ffi::VaList<'r>, ...) {foo}`

error[E0308]: mismatched types
  --> $DIR/variadic-ffi-1.rs:20:54
   |
LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
   |                                                      ^^^ expected variadic fn, found non-variadic function
   |
   = note: expected type `for<'r> extern "C" fn(isize, u8, std::ffi::VaList<'r>, ...)`
              found type `extern "C" fn(isize, u8) {bar}`

error[E0617]: can't pass `f32` to variadic function
  --> $DIR/variadic-ffi-1.rs:22:19
   |
LL |         foo(1, 2, 3f32);
   |                   ^^^^ help: cast the value to `c_double`: `3f32 as c_double`

error[E0617]: can't pass `bool` to variadic function
  --> $DIR/variadic-ffi-1.rs:23:19
   |
LL |         foo(1, 2, true);
   |                   ^^^^ help: cast the value to `c_int`: `true as c_int`

error[E0617]: can't pass `i8` to variadic function
  --> $DIR/variadic-ffi-1.rs:24:19
   |
LL |         foo(1, 2, 1i8);
   |                   ^^^ help: cast the value to `c_int`: `1i8 as c_int`

error[E0617]: can't pass `u8` to variadic function
  --> $DIR/variadic-ffi-1.rs:25:19
   |
LL |         foo(1, 2, 1u8);
   |                   ^^^ help: cast the value to `c_uint`: `1u8 as c_uint`

error[E0617]: can't pass `i16` to variadic function
  --> $DIR/variadic-ffi-1.rs:26:19
   |
LL |         foo(1, 2, 1i16);
   |                   ^^^^ help: cast the value to `c_int`: `1i16 as c_int`

error[E0617]: can't pass `u16` to variadic function
  --> $DIR/variadic-ffi-1.rs:27:19
   |
LL |         foo(1, 2, 1u16);
   |                   ^^^^ help: cast the value to `c_uint`: `1u16 as c_uint`

error: aborting due to 11 previous errors

Some errors have detailed explanations: E0045, E0060, E0308, E0617.
For more information about an error, try `rustc --explain E0045`.