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Add unsized_fn_params feature

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Santiago Pastorino 2020-10-16 17:46:59 -03:00
parent 2a71e45411
commit 708fc3b1a2
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GPG key ID: 8131A24E0C79EFAF
46 changed files with 165 additions and 86 deletions
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14
compiler/rustc_mir/src/borrow_check/type_check/mod.rs
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@ -1456,7 +1456,9 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
}
self.check_rvalue(body, rv, location);
if !self.tcx().features().unsized_locals {
if !(self.tcx().features().unsized_locals
|| self.tcx().features().unsized_fn_params)
{
let trait_ref = ty::TraitRef {
def_id: tcx.require_lang_item(LangItem::Sized, Some(self.last_span)),
substs: tcx.mk_substs_trait(place_ty, &[]),
@ -1717,9 +1719,9 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
);
}
// When `#![feature(unsized_locals)]` is not enabled,
// When `unsized_fn_params` or `unsized_locals` is not enabled,
// this check is done at `check_local`.
if self.tcx().features().unsized_locals {
if self.tcx().features().unsized_locals || self.tcx().features().unsized_fn_params {
let span = term.source_info.span;
self.ensure_place_sized(dest_ty, span);
}
@ -1880,9 +1882,9 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
LocalKind::Var | LocalKind::Temp => {}
}
// When `#![feature(unsized_locals)]` is enabled, only function calls
// When `unsized_fn_params` or `unsized_locals` is enabled, only function calls
// and nullary ops are checked in `check_call_dest`.
if !self.tcx().features().unsized_locals {
if !(self.tcx().features().unsized_locals || self.tcx().features().unsized_fn_params) {
let span = local_decl.source_info.span;
let ty = local_decl.ty;
self.ensure_place_sized(ty, span);
@ -2024,7 +2026,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
Rvalue::NullaryOp(_, ty) => {
// Even with unsized locals cannot box an unsized value.
if self.tcx().features().unsized_locals {
if self.tcx().features().unsized_locals || self.tcx().features().unsized_fn_params {
let span = body.source_info(location).span;
self.ensure_place_sized(ty, span);
}