diff options
Diffstat (limited to 'compiler/rustc_lint/src/ptr_nulls.rs')
| -rw-r--r-- | compiler/rustc_lint/src/ptr_nulls.rs | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/compiler/rustc_lint/src/ptr_nulls.rs b/compiler/rustc_lint/src/ptr_nulls.rs index 1489f9de819..9ace3a689ad 100644 --- a/compiler/rustc_lint/src/ptr_nulls.rs +++ b/compiler/rustc_lint/src/ptr_nulls.rs @@ -3,7 +3,7 @@ use rustc_hir::{BinOpKind, Expr, ExprKind, TyKind}; use rustc_session::{declare_lint, declare_lint_pass}; use rustc_span::sym; -use crate::lints::PtrNullChecksDiag; +use crate::lints::UselessPtrNullChecksDiag; use crate::{LateContext, LateLintPass, LintContext}; declare_lint! { @@ -38,10 +38,10 @@ declare_lint_pass!(PtrNullChecks => [USELESS_PTR_NULL_CHECKS]); /// a fn ptr, a reference, or a function call whose definition is /// annotated with `#![rustc_never_returns_null_ptr]`. /// If this situation is present, the function returns the appropriate diagnostic. -fn incorrect_check<'a, 'tcx: 'a>( +fn useless_check<'a, 'tcx: 'a>( cx: &'a LateContext<'tcx>, mut e: &'a Expr<'a>, -) -> Option<PtrNullChecksDiag<'tcx>> { +) -> Option<UselessPtrNullChecksDiag<'tcx>> { let mut had_at_least_one_cast = false; loop { e = e.peel_blocks(); @@ -50,14 +50,14 @@ fn incorrect_check<'a, 'tcx: 'a>( && cx.tcx.has_attr(def_id, sym::rustc_never_returns_null_ptr) && let Some(fn_name) = cx.tcx.opt_item_ident(def_id) { - return Some(PtrNullChecksDiag::FnRet { fn_name }); + return Some(UselessPtrNullChecksDiag::FnRet { fn_name }); } else if let ExprKind::Call(path, _args) = e.kind && let ExprKind::Path(ref qpath) = path.kind && let Some(def_id) = cx.qpath_res(qpath, path.hir_id).opt_def_id() && cx.tcx.has_attr(def_id, sym::rustc_never_returns_null_ptr) && let Some(fn_name) = cx.tcx.opt_item_ident(def_id) { - return Some(PtrNullChecksDiag::FnRet { fn_name }); + return Some(UselessPtrNullChecksDiag::FnRet { fn_name }); } e = if let ExprKind::Cast(expr, t) = e.kind && let TyKind::Ptr(_) = t.kind @@ -73,9 +73,9 @@ fn incorrect_check<'a, 'tcx: 'a>( } else if had_at_least_one_cast { let orig_ty = cx.typeck_results().expr_ty(e); return if orig_ty.is_fn() { - Some(PtrNullChecksDiag::FnPtr { orig_ty, label: e.span }) + Some(UselessPtrNullChecksDiag::FnPtr { orig_ty, label: e.span }) } else if orig_ty.is_ref() { - Some(PtrNullChecksDiag::Ref { orig_ty, label: e.span }) + Some(UselessPtrNullChecksDiag::Ref { orig_ty, label: e.span }) } else { None }; @@ -97,7 +97,7 @@ impl<'tcx> LateLintPass<'tcx> for PtrNullChecks { cx.tcx.get_diagnostic_name(def_id), Some(sym::ptr_const_is_null | sym::ptr_is_null) ) - && let Some(diag) = incorrect_check(cx, arg) => + && let Some(diag) = useless_check(cx, arg) => { cx.emit_span_lint(USELESS_PTR_NULL_CHECKS, expr.span, diag) } @@ -110,18 +110,18 @@ impl<'tcx> LateLintPass<'tcx> for PtrNullChecks { cx.tcx.get_diagnostic_name(def_id), Some(sym::ptr_const_is_null | sym::ptr_is_null) ) - && let Some(diag) = incorrect_check(cx, receiver) => + && let Some(diag) = useless_check(cx, receiver) => { cx.emit_span_lint(USELESS_PTR_NULL_CHECKS, expr.span, diag) } ExprKind::Binary(op, left, right) if matches!(op.node, BinOpKind::Eq) => { let to_check: &Expr<'_>; - let diag: PtrNullChecksDiag<'_>; - if let Some(ddiag) = incorrect_check(cx, left) { + let diag: UselessPtrNullChecksDiag<'_>; + if let Some(ddiag) = useless_check(cx, left) { to_check = right; diag = ddiag; - } else if let Some(ddiag) = incorrect_check(cx, right) { + } else if let Some(ddiag) = useless_check(cx, right) { to_check = left; diag = ddiag; } else { |
