mirror of https://github.com/rust-lang/rust
65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
//@ run-pass
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//! Test that users are able to use retrieve internal constructs from stable ones to help with
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//! the migration.
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//@ ignore-stage1
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//@ ignore-cross-compile
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//@ ignore-remote
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//@ ignore-windows-gnu mingw has troubles with linking https://github.com/rust-lang/rust/pull/116837
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//@ edition: 2021
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#![feature(rustc_private)]
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#![feature(assert_matches)]
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#![feature(control_flow_enum)]
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#[macro_use]
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extern crate rustc_smir;
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extern crate rustc_driver;
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extern crate rustc_interface;
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extern crate rustc_middle;
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extern crate stable_mir;
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use rustc_middle::ty::TyCtxt;
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use rustc_smir::rustc_internal;
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use std::io::Write;
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use std::ops::ControlFlow;
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const CRATE_NAME: &str = "input";
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fn test_translation(tcx: TyCtxt<'_>) -> ControlFlow<()> {
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let main_fn = stable_mir::entry_fn().unwrap();
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let body = main_fn.body();
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let orig_ty = body.locals()[0].ty;
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let rustc_ty = rustc_internal::internal(tcx, &orig_ty);
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assert!(rustc_ty.is_unit());
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ControlFlow::Continue(())
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}
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/// This test will generate and analyze a dummy crate using the stable mir.
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/// For that, it will first write the dummy crate into a file.
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/// Then it will create a `StableMir` using custom arguments and then
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/// it will run the compiler.
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fn main() {
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let path = "internal_input.rs";
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generate_input(&path).unwrap();
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let args = vec![
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"rustc".to_string(),
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"--crate-name".to_string(),
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CRATE_NAME.to_string(),
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path.to_string(),
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];
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run_with_tcx!(args, test_translation).unwrap();
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}
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fn generate_input(path: &str) -> std::io::Result<()> {
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let mut file = std::fs::File::create(path)?;
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write!(
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file,
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r#"
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pub fn main() {{
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}}
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"#
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)?;
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Ok(())
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}
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