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extern "C" {
fn printf(c: *const i8, ...);
}
fn main() {
unsafe {
printf(::std::ptr::null(), 0f32);
//~^ ERROR can't pass `f32` to variadic function
//~| HELP cast the value to `c_double`
printf(::std::ptr::null(), 0i8);
//~^ ERROR can't pass `i8` to variadic function
//~| HELP cast the value to `c_int`
printf(::std::ptr::null(), 0i16);
//~^ ERROR can't pass `i16` to variadic function
//~| HELP cast the value to `c_int`
printf(::std::ptr::null(), 0u8);
//~^ ERROR can't pass `u8` to variadic function
//~| HELP cast the value to `c_uint`
printf(::std::ptr::null(), 0u16);
//~^ ERROR can't pass `u16` to variadic function
//~| HELP cast the value to `c_uint`
printf(::std::ptr::null(), printf);
//~^ ERROR can't pass a function item to a variadic function
//~| HELP a function item is zero-sized and needs to be cast into a function pointer to be used in FFI
//~| HELP use a function pointer instead
}
}
|
