tests/ui/error-codes/E0617.rs

   1 extern "C" {
   2     fn printf(c: *const i8, ...);
   3 }
   4
   5 fn main() {
   6     unsafe {
   7         printf(::std::ptr::null(), 0f32);
   8         //~^ ERROR can't pass `f32` to variadic function
   9         //~| HELP cast the value to `c_double`
  10         printf(::std::ptr::null(), 0i8);
  11         //~^ ERROR can't pass `i8` to variadic function
  12         //~| HELP cast the value to `c_int`
  13         printf(::std::ptr::null(), 0i16);
  14         //~^ ERROR can't pass `i16` to variadic function
  15         //~| HELP cast the value to `c_int`
  16         printf(::std::ptr::null(), 0u8);
  17         //~^ ERROR can't pass `u8` to variadic function
  18         //~| HELP cast the value to `c_uint`
  19         printf(::std::ptr::null(), 0u16);
  20         //~^ ERROR can't pass `u16` to variadic function
  21         //~| HELP cast the value to `c_uint`
  22         printf(::std::ptr::null(), printf);
  23         //~^ ERROR can't pass `unsafe extern "C" fn(*const i8, ...) {printf}` to variadic function
  24         //~| HELP cast the value to `unsafe extern "C" fn(*const i8, ...)`
  25     }
  26 }