| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // This test case makes sure that the compiler does not try to re-use anything |
| // from the incremental compilation cache if the cache was produced by a |
| // different compiler version. This is tested by artificially forcing the |
| // emission of a different compiler version in the header of rpass1 artifacts, |
| // and then making sure that the only object file of the test program gets |
| // re-codegened although the program stays unchanged. |
| |
| // The `l33t haxx0r` Rust compiler is known to produce incr. comp. artifacts |
| // that are outrageously incompatible with just about anything, even itself: |
| //[rpass1] rustc-env:RUSTC_FORCE_INCR_COMP_ARTIFACT_HEADER="l33t haxx0r rustc 2.1 LTS" |
| |
| // revisions:rpass1 rpass2 |
| // compile-flags: -Z query-dep-graph |
| |
| #![feature(rustc_attrs)] |
| #![rustc_partition_codegened(module="cache_file_headers", cfg="rpass2")] |
| |
| fn main() { |
| // empty |
| } |
