src/test/codegen-units/instantiation-through-vtable.rs

   1 // Copyright 2012-2015 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 // ignore-tidy-linelength
  12 // compile-flags:-Zprint-trans-items=eager
  13
  14 #![deny(dead_code)]
  15
  16 trait Trait {
  17     fn foo(&self) -> u32;
  18     fn bar(&self);
  19 }
  20
  21 struct Struct<T> {
  22     _a: T
  23 }
  24
  25 impl<T> Trait for Struct<T> {
  26     fn foo(&self) -> u32 { 0 }
  27     fn bar(&self) {}
  28 }
  29
  30 //~ TRANS_ITEM fn instantiation_through_vtable::main[0]
  31 fn main() {
  32     let s1 = Struct { _a: 0u32 };
  33
  34     //~ TRANS_ITEM fn instantiation_through_vtable::{{impl}}[0]::foo[0]<u32>
  35     //~ TRANS_ITEM fn instantiation_through_vtable::{{impl}}[0]::bar[0]<u32>
  36     let _ = &s1 as &Trait;
  37
  38     let s1 = Struct { _a: 0u64 };
  39     //~ TRANS_ITEM fn instantiation_through_vtable::{{impl}}[0]::foo[0]<u64>
  40     //~ TRANS_ITEM fn instantiation_through_vtable::{{impl}}[0]::bar[0]<u64>
  41     let _ = &s1 as &Trait;
  42 }