Use is_unstable_const_fn where appropriate

Author: slightlyoutofphase

src/librustdoc/clean/mod.rs

@@ -23,7 +23,7 @@ use rustc_middle::middle::stability;
 use rustc_middle::ty::fold::TypeFolder;
 use rustc_middle::ty::subst::InternalSubsts;
 use rustc_middle::ty::{self, AdtKind, Lift, Ty, TyCtxt};
-use rustc_mir::const_eval::is_min_const_fn;
+use rustc_mir::const_eval::{is_min_const_fn, is_unstable_const_fn};
 use rustc_span::hygiene::MacroKind;
 use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{self, Pos};
@@ -900,7 +900,7 @@ impl Clean<Item> for doctree::Function<'_> {
             enter_impl_trait(cx, || (self.generics.clean(cx), (self.decl, self.body).clean(cx)));
 
         let did = cx.tcx.hir().local_def_id(self.id);
-        let constness = if is_min_const_fn(cx.tcx, did.to_def_id()) {
+        let constness = if !is_unstable_const_fn(cx.tcx, did.to_def_id()).is_some() {
             hir::Constness::Const
         } else {
             hir::Constness::NotConst
@@ -1108,7 +1108,7 @@ impl Clean<Item> for hir::TraitItem<'_> {
             hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Provided(body)) => {
                 let mut m = (sig, &self.generics, body, None).clean(cx);
                 if m.header.constness == hir::Constness::Const
-                    && !is_min_const_fn(cx.tcx, local_did.to_def_id())
+                    && is_unstable_const_fn(cx.tcx, local_did.to_def_id()).is_some()
                 {
                     m.header.constness = hir::Constness::NotConst;
                 }
@@ -1121,7 +1121,7 @@ impl Clean<Item> for hir::TraitItem<'_> {
                 let (all_types, ret_types) = get_all_types(&generics, &decl, cx);
                 let mut t = TyMethod { header: sig.header, decl, generics, all_types, ret_types };
                 if t.header.constness == hir::Constness::Const
-                    && !is_min_const_fn(cx.tcx, local_did.to_def_id())
+                    && is_unstable_const_fn(cx.tcx, local_did.to_def_id()).is_some()
                 {
                     t.header.constness = hir::Constness::NotConst;
                 }
@@ -1154,7 +1154,7 @@ impl Clean<Item> for hir::ImplItem<'_> {
             hir::ImplItemKind::Fn(ref sig, body) => {
                 let mut m = (sig, &self.generics, body, Some(self.defaultness)).clean(cx);
                 if m.header.constness == hir::Constness::Const
-                    && !is_min_const_fn(cx.tcx, local_did.to_def_id())
+                    && is_unstable_const_fn(cx.tcx, local_did.to_def_id()).is_some()
                 {
                     m.header.constness = hir::Constness::NotConst;
                 }