mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Comment why hir_ty_to_ty is safe in check_ty

Browse Source
This commit is contained in:
Evan Typanski 2022-05-13 05:55:50 -04:00
parent 0def44a1c1
commit ad7338e565
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
clippy_lints/src/types/redundant_allocation.rs
View File

@ -55,7 +55,9 @@ pub(super) fn check(cx: &LateContext<'_>, hir_ty: &hir::Ty<'_>, qpath: &QPath<'_
}; };
let inner_span = match qpath_generic_tys(inner_qpath).next() { let inner_span = match qpath_generic_tys(inner_qpath).next() {
Some(ty) => { Some(ty) => {
// Reallocation of a fat pointer causes it to become thin // Reallocation of a fat pointer causes it to become thin. `hir_ty_to_ty` is safe to use
// here because `mod.rs` guarantees this lint is only run on types outside of bodies and
// is not run on locals.
if !hir_ty_to_ty(cx.tcx, ty).is_sized(cx.tcx.at(ty.span), cx.param_env) { if !hir_ty_to_ty(cx.tcx, ty).is_sized(cx.tcx.at(ty.span), cx.param_env) {
return false; return false;
} }