Rename Unsafe to Safety

12 files changed, 36 insertions, 40 deletions

diff --git a/clippy_lints/src/derive.rs b/clippy_lints/src/derive.rs
index 9662c8f4fe2..53e0cef361a 100644
--- a/clippy_lints/src/derive.rs
+++ b/clippy_lints/src/derive.rs
@@ -5,7 +5,7 @@ use rustc_errors::Applicability;
 use rustc_hir::def_id::DefId;
 use rustc_hir::intravisit::{walk_expr, walk_fn, walk_item, FnKind, Visitor};
 use rustc_hir::{
-    self as hir, BlockCheckMode, BodyId, Expr, ExprKind, FnDecl, Impl, Item, ItemKind, UnsafeSource, Unsafety,
+    self as hir, BlockCheckMode, BodyId, Expr, ExprKind, FnDecl, Safety, Impl, Item, ItemKind, UnsafeSource,
 };
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::hir::nested_filter;
@@ -415,7 +415,7 @@ impl<'tcx> Visitor<'tcx> for UnsafeVisitor<'_, 'tcx> {
         }
 
         if let Some(header) = kind.header()
-            && header.unsafety == Unsafety::Unsafe
+            && header.safety == Safety::Unsafe
         {
             self.has_unsafe = true;
         }
diff --git a/clippy_lints/src/doc/missing_headers.rs b/clippy_lints/src/doc/missing_headers.rs
index f935ae2e3e4..36ba19698c7 100644
--- a/clippy_lints/src/doc/missing_headers.rs
+++ b/clippy_lints/src/doc/missing_headers.rs
@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::{span_lint, span_lint_and_note};
 use clippy_utils::ty::{implements_trait, is_type_diagnostic_item};
 use clippy_utils::{is_doc_hidden, return_ty};
-use rustc_hir::{BodyId, FnSig, OwnerId, Unsafety};
+use rustc_hir::{BodyId, FnSig, OwnerId, Safety};
 use rustc_lint::LateContext;
 use rustc_middle::ty;
 use rustc_span::{sym, Span};
@@ -33,14 +33,14 @@ pub fn check(
     }
 
     let span = cx.tcx.def_span(owner_id);
-    match (headers.safety, sig.header.unsafety) {
-        (false, Unsafety::Unsafe) => span_lint(
+    match (headers.safety, sig.header.safety) {
+        (false, Safety::Unsafe) => span_lint(
             cx,
             MISSING_SAFETY_DOC,
             span,
             "unsafe function's docs miss `# Safety` section",
         ),
-        (true, Unsafety::Normal) => span_lint(
+        (true, Safety::Safe) => span_lint(
             cx,
             UNNECESSARY_SAFETY_DOC,
             span,
diff --git a/clippy_lints/src/doc/mod.rs b/clippy_lints/src/doc/mod.rs
index 4bced104d3b..7fdb582e640 100644
--- a/clippy_lints/src/doc/mod.rs
+++ b/clippy_lints/src/doc/mod.rs
@@ -12,7 +12,7 @@ use pulldown_cmark::{BrokenLink, CodeBlockKind, CowStr, Options};
 use rustc_ast::ast::Attribute;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::intravisit::{self, Visitor};
-use rustc_hir::{AnonConst, Expr, ImplItemKind, ItemKind, Node, TraitItemKind, Unsafety};
+use rustc_hir::{AnonConst, Expr, ImplItemKind, ItemKind, Node, Safety, TraitItemKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::hir::nested_filter;
 use rustc_middle::lint::in_external_macro;
@@ -415,13 +415,13 @@ impl<'tcx> LateLintPass<'tcx> for Documentation {
                     }
                 },
                 ItemKind::Trait(_, unsafety, ..) => match (headers.safety, unsafety) {
-                    (false, Unsafety::Unsafe) => span_lint(
+                    (false, Safety::Unsafe) => span_lint(
                         cx,
                         MISSING_SAFETY_DOC,
                         cx.tcx.def_span(item.owner_id),
                         "docs for unsafe trait missing `# Safety` section",
                     ),
-                    (true, Unsafety::Normal) => span_lint(
+                    (true, Safety::Safe) => span_lint(
                         cx,
                         UNNECESSARY_SAFETY_DOC,
                         cx.tcx.def_span(item.owner_id),
diff --git a/clippy_lints/src/eta_reduction.rs b/clippy_lints/src/eta_reduction.rs
index 306a4a9e55c..b58018ca035 100644
--- a/clippy_lints/src/eta_reduction.rs
+++ b/clippy_lints/src/eta_reduction.rs
@@ -5,7 +5,7 @@ use clippy_utils::ty::type_diagnostic_name;
 use clippy_utils::usage::{local_used_after_expr, local_used_in};
 use clippy_utils::{get_path_from_caller_to_method_type, is_adjusted, path_to_local, path_to_local_id};
 use rustc_errors::Applicability;
-use rustc_hir::{BindingMode, Expr, ExprKind, FnRetTy, Param, PatKind, QPath, TyKind, Unsafety};
+use rustc_hir::{BindingMode, Expr, ExprKind, FnRetTy, Param, PatKind, QPath, Safety, TyKind};
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{
@@ -146,7 +146,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
                     ty::FnPtr(sig) => sig.skip_binder(),
                     ty::Closure(_, subs) => cx
                         .tcx
-                        .signature_unclosure(subs.as_closure().sig(), Unsafety::Normal)
+                        .signature_unclosure(subs.as_closure().sig(), Safety::Safe)
                         .skip_binder(),
                     _ => {
                         if typeck.type_dependent_def_id(body.value.hir_id).is_some()
@@ -154,7 +154,7 @@ impl<'tcx> LateLintPass<'tcx> for EtaReduction {
                             && let output = typeck.expr_ty(body.value)
                             && let ty::Tuple(tys) = *subs.type_at(1).kind()
                         {
-                            cx.tcx.mk_fn_sig(tys, output, false, Unsafety::Normal, Abi::Rust)
+                            cx.tcx.mk_fn_sig(tys, output, false, Safety::Safe, Abi::Rust)
                         } else {
                             return;
                         }
@@ -241,11 +241,9 @@ fn check_inputs(
 }
 
 fn check_sig<'tcx>(cx: &LateContext<'tcx>, closure: ClosureArgs<'tcx>, call_sig: FnSig<'_>) -> bool {
-    call_sig.unsafety == Unsafety::Normal
+    call_sig.safety == Safety::Safe
         && !has_late_bound_to_non_late_bound_regions(
-            cx.tcx
-                .signature_unclosure(closure.sig(), Unsafety::Normal)
-                .skip_binder(),
+            cx.tcx.signature_unclosure(closure.sig(), Safety::Safe).skip_binder(),
             call_sig,
         )
 }
diff --git a/clippy_lints/src/functions/misnamed_getters.rs b/clippy_lints/src/functions/misnamed_getters.rs
index 8ac17e17688..7729c556e1f 100644
--- a/clippy_lints/src/functions/misnamed_getters.rs
+++ b/clippy_lints/src/functions/misnamed_getters.rs
@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::source::snippet;
 use rustc_errors::Applicability;
 use rustc_hir::intravisit::FnKind;
-use rustc_hir::{Body, ExprKind, FnDecl, ImplicitSelfKind, Unsafety};
+use rustc_hir::{Body, ExprKind, FnDecl, Safety, ImplicitSelfKind};
 use rustc_lint::LateContext;
 use rustc_middle::ty;
 use rustc_span::Span;
@@ -34,7 +34,7 @@ pub fn check_fn(cx: &LateContext<'_>, kind: FnKind<'_>, decl: &FnDecl<'_>, body:
         ImplicitSelfKind::None => return,
     };
 
-    let name = if sig.header.unsafety == Unsafety::Unsafe {
+    let name = if sig.header.safety == Safety::Unsafe {
         name.strip_suffix("_unchecked").unwrap_or(name)
     } else {
         name
diff --git a/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs b/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs
index 995dd782cbb..b44a5f20ef6 100644
--- a/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs
+++ b/clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs
@@ -19,30 +19,30 @@ pub(super) fn check_fn<'tcx>(
     body: &'tcx hir::Body<'tcx>,
     def_id: LocalDefId,
 ) {
-    let unsafety = match kind {
-        intravisit::FnKind::ItemFn(_, _, hir::FnHeader { unsafety, .. }) => unsafety,
-        intravisit::FnKind::Method(_, sig) => sig.header.unsafety,
+    let safety = match kind {
+        intravisit::FnKind::ItemFn(_, _, hir::FnHeader { safety, .. }) => safety,
+        intravisit::FnKind::Method(_, sig) => sig.header.safety,
         intravisit::FnKind::Closure => return,
     };
 
-    check_raw_ptr(cx, unsafety, decl, body, def_id);
+    check_raw_ptr(cx, safety, decl, body, def_id);
 }
 
 pub(super) fn check_trait_item<'tcx>(cx: &LateContext<'tcx>, item: &'tcx hir::TraitItem<'_>) {
     if let hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Provided(eid)) = item.kind {
         let body = cx.tcx.hir().body(eid);
-        check_raw_ptr(cx, sig.header.unsafety, sig.decl, body, item.owner_id.def_id);
+        check_raw_ptr(cx, sig.header.safety, sig.decl, body, item.owner_id.def_id);
     }
 }
 
 fn check_raw_ptr<'tcx>(
     cx: &LateContext<'tcx>,
-    unsafety: hir::Unsafety,
+    safety: hir::Safety,
     decl: &'tcx hir::FnDecl<'tcx>,
     body: &'tcx hir::Body<'tcx>,
     def_id: LocalDefId,
 ) {
-    if unsafety == hir::Unsafety::Normal && cx.effective_visibilities.is_exported(def_id) {
+    if safety == hir::Safety::Safe && cx.effective_visibilities.is_exported(def_id) {
         let raw_ptrs = iter_input_pats(decl, body)
             .filter_map(|arg| raw_ptr_arg(cx, arg))
             .collect::<HirIdSet>();
@@ -58,7 +58,7 @@ fn check_raw_ptr<'tcx>(
                     },
                     hir::ExprKind::MethodCall(_, recv, args, _) => {
                         let def_id = typeck.type_dependent_def_id(e.hir_id).unwrap();
-                        if cx.tcx.fn_sig(def_id).skip_binder().skip_binder().unsafety == hir::Unsafety::Unsafe {
+                        if cx.tcx.fn_sig(def_id).skip_binder().skip_binder().safety == hir::Safety::Unsafe {
                             check_arg(cx, &raw_ptrs, recv);
                             for arg in args {
                                 check_arg(cx, &raw_ptrs, arg);
diff --git a/clippy_lints/src/inherent_to_string.rs b/clippy_lints/src/inherent_to_string.rs
index 157f6105984..9aedf5ec7e8 100644
--- a/clippy_lints/src/inherent_to_string.rs
+++ b/clippy_lints/src/inherent_to_string.rs
@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::span_lint_and_help;
 use clippy_utils::ty::{implements_trait, is_type_lang_item};
 use clippy_utils::{return_ty, trait_ref_of_method};
-use rustc_hir::{GenericParamKind, ImplItem, ImplItemKind, LangItem, Unsafety};
+use rustc_hir::{GenericParamKind, ImplItem, ImplItemKind, LangItem, Safety};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::declare_lint_pass;
 use rustc_span::sym;
@@ -99,7 +99,7 @@ impl<'tcx> LateLintPass<'tcx> for InherentToString {
         if let ImplItemKind::Fn(ref signature, _) = impl_item.kind
             // #11201
             && let header = signature.header
-            && header.unsafety == Unsafety::Normal
+            && header.safety == Safety::Safe
             && header.abi == Abi::Rust
             && impl_item.ident.name == sym::to_string
             && let decl = signature.decl
diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs
index 63545d6c503..2b92bff016d 100644
--- a/clippy_lints/src/methods/mod.rs
+++ b/clippy_lints/src/methods/mod.rs
@@ -5038,7 +5038,7 @@ fn lint_binary_expr_with_method_call(cx: &LateContext<'_>, info: &mut BinaryExpr
 }
 
 const FN_HEADER: hir::FnHeader = hir::FnHeader {
-    unsafety: hir::Unsafety::Normal,
+    safety: hir::Safety::Safe,
     constness: hir::Constness::NotConst,
     asyncness: hir::IsAsync::NotAsync,
     abi: rustc_target::spec::abi::Abi::Rust,
@@ -5214,7 +5214,5 @@ impl OutType {
 }
 
 fn fn_header_equals(expected: hir::FnHeader, actual: hir::FnHeader) -> bool {
-    expected.constness == actual.constness
-        && expected.unsafety == actual.unsafety
-        && expected.asyncness == actual.asyncness
+    expected.constness == actual.constness && expected.safety == actual.safety && expected.asyncness == actual.asyncness
 }
diff --git a/clippy_lints/src/multiple_unsafe_ops_per_block.rs b/clippy_lints/src/multiple_unsafe_ops_per_block.rs
index 0e138066780..5306205aed7 100644
--- a/clippy_lints/src/multiple_unsafe_ops_per_block.rs
+++ b/clippy_lints/src/multiple_unsafe_ops_per_block.rs
@@ -2,7 +2,7 @@ use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::visitors::{for_each_expr_with_closures, Descend, Visitable};
 use core::ops::ControlFlow::Continue;
 use hir::def::{DefKind, Res};
-use hir::{BlockCheckMode, ExprKind, QPath, UnOp, Unsafety};
+use hir::{BlockCheckMode, ExprKind, Safety, QPath, UnOp};
 use rustc_ast::Mutability;
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass};
@@ -133,7 +133,7 @@ fn collect_unsafe_exprs<'tcx>(
                     ty::FnPtr(sig) => sig,
                     _ => return Continue(Descend::Yes),
                 };
-                if sig.unsafety() == Unsafety::Unsafe {
+                if sig.safety() == Safety::Unsafe {
                     unsafe_ops.push(("unsafe function call occurs here", expr.span));
                 }
             },
@@ -144,7 +144,7 @@ fn collect_unsafe_exprs<'tcx>(
                     .type_dependent_def_id(expr.hir_id)
                     .map(|def_id| cx.tcx.fn_sig(def_id))
                 {
-                    if sig.skip_binder().unsafety() == Unsafety::Unsafe {
+                    if sig.skip_binder().safety() == Safety::Unsafe {
                         unsafe_ops.push(("unsafe method call occurs here", expr.span));
                     }
                 }
diff --git a/clippy_lints/src/new_without_default.rs b/clippy_lints/src/new_without_default.rs
index 78dd1e05162..b60fea3f03e 100644
--- a/clippy_lints/src/new_without_default.rs
+++ b/clippy_lints/src/new_without_default.rs
@@ -75,7 +75,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
                     if let hir::ImplItemKind::Fn(ref sig, _) = impl_item.kind {
                         let name = impl_item.ident.name;
                         let id = impl_item.owner_id;
-                        if sig.header.unsafety == hir::Unsafety::Unsafe {
+                        if sig.header.safety == hir::Safety::Unsafe {
                             // can't be implemented for unsafe new
                             return;
                         }
diff --git a/clippy_lints/src/ptr.rs b/clippy_lints/src/ptr.rs
index 2534e3c8468..65929cd5fea 100644
--- a/clippy_lints/src/ptr.rs
+++ b/clippy_lints/src/ptr.rs
@@ -12,7 +12,7 @@ use rustc_hir::hir_id::{HirId, HirIdMap};
 use rustc_hir::intravisit::{walk_expr, Visitor};
 use rustc_hir::{
     self as hir, AnonConst, BinOpKind, BindingMode, Body, Expr, ExprKind, FnRetTy, FnSig, GenericArg, ImplItemKind,
-    ItemKind, Lifetime, Mutability, Node, Param, PatKind, QPath, TraitFn, TraitItem, TraitItemKind, TyKind, Unsafety,
+    ItemKind, Lifetime, Mutability, Node, Param, PatKind, QPath, Safety, TraitFn, TraitItem, TraitItemKind, TyKind,
 };
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_infer::traits::{Obligation, ObligationCause};
@@ -542,7 +542,7 @@ fn check_mut_from_ref<'tcx>(cx: &LateContext<'tcx>, sig: &FnSig<'_>, body: Optio
         if let Some(args) = args
             && !args.is_empty()
             && body.map_or(true, |body| {
-                sig.header.unsafety == Unsafety::Unsafe || contains_unsafe_block(cx, body.value)
+                sig.header.safety == Safety::Unsafe || contains_unsafe_block(cx, body.value)
             })
         {
             span_lint_and_then(
diff --git a/clippy_lints/src/undocumented_unsafe_blocks.rs b/clippy_lints/src/undocumented_unsafe_blocks.rs
index cbd16180077..4120bb1331b 100644
--- a/clippy_lints/src/undocumented_unsafe_blocks.rs
+++ b/clippy_lints/src/undocumented_unsafe_blocks.rs
@@ -200,7 +200,7 @@ impl<'tcx> LateLintPass<'tcx> for UndocumentedUnsafeBlocks {
         let item_has_safety_comment = item_has_safety_comment(cx, item);
         match (&item.kind, item_has_safety_comment) {
             // lint unsafe impl without safety comment
-            (ItemKind::Impl(impl_), HasSafetyComment::No) if impl_.unsafety == hir::Unsafety::Unsafe => {
+            (ItemKind::Impl(impl_), HasSafetyComment::No) if impl_.safety == hir::Safety::Unsafe => {
                 if !is_lint_allowed(cx, UNDOCUMENTED_UNSAFE_BLOCKS, item.hir_id())
                     && !is_unsafe_from_proc_macro(cx, item.span)
                 {
@@ -222,7 +222,7 @@ impl<'tcx> LateLintPass<'tcx> for UndocumentedUnsafeBlocks {
                 }
             },
             // lint safe impl with unnecessary safety comment
-            (ItemKind::Impl(impl_), HasSafetyComment::Yes(pos)) if impl_.unsafety == hir::Unsafety::Normal => {
+            (ItemKind::Impl(impl_), HasSafetyComment::Yes(pos)) if impl_.safety == hir::Safety::Safe => {
                 if !is_lint_allowed(cx, UNNECESSARY_SAFETY_COMMENT, item.hir_id()) {
                     let (span, help_span) = mk_spans(pos);