tests/ui/rfc-2008-non-exhaustive/improper_ctypes/extern_crate_improper.rs

   1 // aux-build:types.rs
   2 #![deny(improper_ctypes)]
   3
   4 extern crate types;
   5
   6 // This test checks that non-exhaustive types with `#[repr(C)]` from an extern crate are considered
   7 // improper.
   8
   9 use types::{NonExhaustiveEnum, NonExhaustiveVariants, NormalStruct, TupleStruct, UnitStruct};
  10
  11 extern "C" {
  12     pub fn non_exhaustive_enum(_: NonExhaustiveEnum);
  13     //~^ ERROR `extern` block uses type `NonExhaustiveEnum`, which is not FFI-safe
  14     pub fn non_exhaustive_normal_struct(_: NormalStruct);
  15     //~^ ERROR `extern` block uses type `NormalStruct`, which is not FFI-safe
  16     pub fn non_exhaustive_unit_struct(_: UnitStruct);
  17     //~^ ERROR `extern` block uses type `UnitStruct`, which is not FFI-safe
  18     pub fn non_exhaustive_tuple_struct(_: TupleStruct);
  19     //~^ ERROR `extern` block uses type `TupleStruct`, which is not FFI-safe
  20     pub fn non_exhaustive_variant(_: NonExhaustiveVariants);
  21     //~^ ERROR `extern` block uses type `NonExhaustiveVariants`, which is not FFI-safe
  22 }
  23
  24 fn main() {}