src/librustc_codegen_utils/lib.rs

   1 //! # Note
   2 //!
   3 //! This API is completely unstable and subject to change.
   4
   5 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
   6
   7 #![feature(arbitrary_self_types)]
   8 #![feature(box_patterns)]
   9 #![feature(box_syntax)]
  10 #![feature(core_intrinsics)]
  11 #![feature(never_type)]
  12 #![feature(nll)]
  13 #![feature(in_band_lifetimes)]
  14
  15 #![recursion_limit="256"]
  16
  17 #[macro_use]
  18 extern crate rustc;
  19
  20 use rustc::ty::TyCtxt;
  21 use rustc::ty::query::Providers;
  22 use rustc::hir::def_id::LOCAL_CRATE;
  23 use syntax::symbol::sym;
  24
  25 pub mod link;
  26 pub mod codegen_backend;
  27 pub mod symbol_names;
  28 pub mod symbol_names_test;
  29
  30 /// check for the #[rustc_error] annotation, which forces an
  31 /// error in codegen. This is used to write compile-fail tests
  32 /// that actually test that compilation succeeds without
  33 /// reporting an error.
  34 pub fn check_for_rustc_errors_attr(tcx: TyCtxt<'_>) {
  35     if let Some((def_id, _)) = tcx.entry_fn(LOCAL_CRATE) {
  36         if tcx.has_attr(def_id, sym::rustc_error) {
  37             tcx.sess.span_fatal(tcx.def_span(def_id), "compilation successful");
  38         }
  39     }
  40 }
  41
  42 pub fn provide(providers: &mut Providers<'_>) {
  43     crate::symbol_names::provide(providers);
  44 }