src/test/auxiliary/linkage-visibility.rs

   1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![feature(rustc_private)]
  12
  13 // We're testing linkage visibility; the compiler warns us, but we want to
  14 // do the runtime check that these functions aren't exported.
  15 #![allow(private_no_mangle_fns)]
  16
  17 extern crate rustc_back;
  18
  19 use rustc_back::dynamic_lib::DynamicLibrary;
  20
  21 #[no_mangle]
  22 pub fn foo() { bar(); }
  23
  24 pub fn foo2<T>() {
  25     fn bar2() {
  26         bar();
  27     }
  28     bar2();
  29 }
  30
  31 #[no_mangle]
  32 fn bar() { }
  33
  34 #[allow(dead_code)]
  35 #[no_mangle]
  36 fn baz() { }
  37
  38 pub fn test() {
  39     let lib = DynamicLibrary::open(None).unwrap();
  40     unsafe {
  41         assert!(lib.symbol::<isize>("foo").is_ok());
  42         assert!(lib.symbol::<isize>("baz").is_err());
  43         assert!(lib.symbol::<isize>("bar").is_err());
  44     }
  45 }