nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2025-01-26 14:43:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

Rollup merge of #94308 - tmiasko:normalize-main-ret-ty, r=oli-obk

Browse Source 
Normalize main return type during mono item collection & codegen

The issue can be observed with `-Zprint-mono-items=lazy` in:

```rust
#![feature(termination_trait_lib)]
fn main() -> impl std::process::Termination { }
```
```
BEFORE: MONO_ITEM fn std::rt::lang_start::<impl std::process::Termination> ````@@```` t.93933fa2-cgu.2[External]
AFTER:  MONO_ITEM fn std::rt::lang_start::<()> ````@@```` t.df56e625-cgu.1[External]
```
This commit is contained in:
Dylan DPC 2022-02-24 21:42:16 +01:00 committed by GitHub
commit 787c6f3365
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
compiler/rustc_codegen_cranelift/src/main_shim.rs
View File

@ -51,7 +51,10 @@ pub(crate) fn maybe_create_entry_wrapper(
// late-bound regions, since late-bound
// regions must appear in the argument
// listing.
let main_ret_ty = tcx.erase_regions(main_ret_ty.no_bound_vars().unwrap());
let main_ret_ty = tcx.normalize_erasing_regions(
ty::ParamEnv::reveal_all(),
main_ret_ty.no_bound_vars().unwrap(),
);
let cmain_sig = Signature {
params: vec![

5
compiler/rustc_codegen_ssa/src/base.rs
View File

@ -407,7 +407,10 @@ pub fn maybe_create_entry_wrapper<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>>(
// late-bound regions, since late-bound
// regions must appear in the argument
// listing.
let main_ret_ty = cx.tcx().erase_regions(main_ret_ty.no_bound_vars().unwrap());
let main_ret_ty = cx.tcx().normalize_erasing_regions(
ty::ParamEnv::reveal_all(),
main_ret_ty.no_bound_vars().unwrap(),
);
let Some(llfn) = cx.declare_c_main(llfty) else {
// FIXME: We should be smart and show a better diagnostic here.

5
compiler/rustc_monomorphize/src/collector.rs
View File

@ -1270,7 +1270,10 @@ impl<'v> RootCollector<'_, 'v> {
// late-bound regions, since late-bound
// regions must appear in the argument
// listing.
let main_ret_ty = self.tcx.erase_regions(main_ret_ty.no_bound_vars().unwrap());
let main_ret_ty = self.tcx.normalize_erasing_regions(
ty::ParamEnv::reveal_all(),
main_ret_ty.no_bound_vars().unwrap(),
);
let start_instance = Instance::resolve(
self.tcx,