Auto merge of #7853 - flip1995:rustup, r=flip1995

Rustup

r? `@ghost`

changelog: none

Author: bors

CHANGELOG.md

@@ -1873,10 +1873,10 @@ Released 2019-01-17
 
 [2e26fdc2...b2601be](https://github.com/rust-lang/rust-clippy/compare/2e26fdc2...b2601be)
 
-* New lints: [`slow_vector_initialization`], [`mem_discriminant_non_enum`],
+* New lints: [`slow_vector_initialization`], `mem_discriminant_non_enum`,
   [`redundant_clone`], [`wildcard_dependencies`],
   [`into_iter_on_ref`], `into_iter_on_array`, [`deprecated_cfg_attr`],
-  [`mem_discriminant_non_enum`], [`cargo_common_metadata`]
+  [`cargo_common_metadata`]
 * Add support for `u128` and `i128` to integer related lints
 * Add float support to `mistyped_literal_suffixes`
 * Fix false positives in `use_self`
@@ -2842,7 +2842,6 @@ Released 2018-09-13
 [`match_wild_err_arm`]: https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
 [`match_wildcard_for_single_variants`]: https://rust-lang.github.io/rust-clippy/master/index.html#match_wildcard_for_single_variants
 [`maybe_infinite_iter`]: https://rust-lang.github.io/rust-clippy/master/index.html#maybe_infinite_iter
-[`mem_discriminant_non_enum`]: https://rust-lang.github.io/rust-clippy/master/index.html#mem_discriminant_non_enum
 [`mem_forget`]: https://rust-lang.github.io/rust-clippy/master/index.html#mem_forget
 [`mem_replace_option_with_none`]: https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_option_with_none
 [`mem_replace_with_default`]: https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.57"
+version = "0.1.58"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.57"
+version = "0.1.58"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_lints/src/copies.rs

@@ -9,7 +9,7 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::{Applicability, DiagnosticBuilder};
 use rustc_hir::intravisit::{self, NestedVisitorMap, Visitor};
 use rustc_hir::{Block, Expr, ExprKind, HirId};
-use rustc_lint::{LateContext, LateLintPass};
+use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::hir::map::Map;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 use rustc_span::{source_map::Span, symbol::Symbol, BytePos};
@@ -432,10 +432,11 @@ fn emit_branches_sharing_code_lint(
     let mut add_expr_note = false;
 
     // Construct suggestions
+    let sm = cx.sess().source_map();
     if start_stmts > 0 {
         let block = blocks[0];
         let span_start = first_line_of_span(cx, if_expr.span).shrink_to_lo();
-        let span_end = block.stmts[start_stmts - 1].span.source_callsite();
+        let span_end = sm.stmt_span(block.stmts[start_stmts - 1].span, block.span);
 
         let cond_span = first_line_of_span(cx, if_expr.span).until(block.span);
         let cond_snippet = reindent_multiline(snippet(cx, cond_span, "_"), false, None);
@@ -454,15 +455,14 @@ fn emit_branches_sharing_code_lint(
         let span_end = block.span.shrink_to_hi();
 
         let moved_start = if end_stmts == 0 && block.expr.is_some() {
-            block.expr.unwrap().span
+            block.expr.unwrap().span.source_callsite()
         } else {
-            block.stmts[block.stmts.len() - end_stmts].span
-        }
-        .source_callsite();
-        let moved_end = block
-            .expr
-            .map_or_else(|| block.stmts[block.stmts.len() - 1].span, |expr| expr.span)
-            .source_callsite();
+            sm.stmt_span(block.stmts[block.stmts.len() - end_stmts].span, block.span)
+        };
+        let moved_end = block.expr.map_or_else(
+            || sm.stmt_span(block.stmts[block.stmts.len() - 1].span, block.span),
+            |expr| expr.span.source_callsite(),
+        );
 
         let moved_span = moved_start.to(moved_end);
         let moved_snipped = reindent_multiline(snippet(cx, moved_span, "_"), true, None);

clippy_lints/src/format.rs

@@ -89,12 +89,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessFormat {
     }
 }
 
-fn span_useless_format(cx: &LateContext<'_>, span: Span, mut sugg: String, mut applicability: Applicability) {
-    // The callsite span contains the statement semicolon for some reason.
-    if snippet_with_applicability(cx, span, "..", &mut applicability).ends_with(';') {
-        sugg.push(';');
-    }
-
+fn span_useless_format(cx: &LateContext<'_>, span: Span, sugg: String, applicability: Applicability) {
     span_lint_and_sugg(
         cx,
         USELESS_FORMAT,

clippy_lints/src/lib.register_all.rs

@@ -130,7 +130,6 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(matches::REDUNDANT_PATTERN_MATCHING),
     LintId::of(matches::SINGLE_MATCH),
     LintId::of(matches::WILDCARD_IN_OR_PATTERNS),
-    LintId::of(mem_discriminant::MEM_DISCRIMINANT_NON_ENUM),
     LintId::of(mem_replace::MEM_REPLACE_OPTION_WITH_NONE),
     LintId::of(mem_replace::MEM_REPLACE_WITH_DEFAULT),
     LintId::of(mem_replace::MEM_REPLACE_WITH_UNINIT),

clippy_lints/src/lib.register_correctness.rs

@@ -37,7 +37,6 @@ store.register_group(true, "clippy::correctness", Some("clippy_correctness"), ve
     LintId::of(loops::NEVER_LOOP),
     LintId::of(loops::WHILE_IMMUTABLE_CONDITION),
     LintId::of(match_str_case_mismatch::MATCH_STR_CASE_MISMATCH),
-    LintId::of(mem_discriminant::MEM_DISCRIMINANT_NON_ENUM),
     LintId::of(mem_replace::MEM_REPLACE_WITH_UNINIT),
     LintId::of(methods::CLONE_DOUBLE_REF),
     LintId::of(methods::ITERATOR_STEP_BY_ZERO),

clippy_lints/src/lib.register_lints.rs

@@ -245,7 +245,6 @@ store.register_lints(&[
     matches::SINGLE_MATCH_ELSE,
     matches::WILDCARD_ENUM_MATCH_ARM,
     matches::WILDCARD_IN_OR_PATTERNS,
-    mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
     mem_forget::MEM_FORGET,
     mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
     mem_replace::MEM_REPLACE_WITH_DEFAULT,

clippy_lints/src/lib.rs

@@ -268,7 +268,6 @@ mod match_on_vec_items;
 mod match_result_ok;
 mod match_str_case_mismatch;
 mod matches;
-mod mem_discriminant;
 mod mem_forget;
 mod mem_replace;
 mod methods;
@@ -606,7 +605,6 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     let doc_valid_idents = conf.doc_valid_idents.iter().cloned().collect::<FxHashSet<_>>();
     store.register_late_pass(move || Box::new(doc::DocMarkdown::new(doc_valid_idents.clone())));
     store.register_late_pass(|| Box::new(neg_multiply::NegMultiply));
-    store.register_late_pass(|| Box::new(mem_discriminant::MemDiscriminant));
     store.register_late_pass(|| Box::new(mem_forget::MemForget));
     store.register_late_pass(|| Box::new(arithmetic::Arithmetic::default()));
     store.register_late_pass(|| Box::new(assign_ops::AssignOps));
@@ -861,6 +859,7 @@ pub fn register_renamed(ls: &mut rustc_lint::LintStore) {
     ls.register_renamed("clippy::panic_params", "non_fmt_panics");
     ls.register_renamed("clippy::unknown_clippy_lints", "unknown_lints");
     ls.register_renamed("clippy::invalid_atomic_ordering", "invalid_atomic_ordering");
+    ls.register_renamed("clippy::mem_discriminant_non_enum", "enum_intrinsics_non_enums");
 }
 
 // only exists to let the dogfood integration test works.

clippy_lints/src/manual_unwrap_or.rs

@@ -98,7 +98,7 @@ fn lint_manual_unwrap_or<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
                 reindent_multiline(or_body_snippet.into(), true, Some(indent));
 
             let suggestion = if scrutinee.span.from_expansion() {
-                    // we don't want parenthesis around macro, e.g. `(some_macro!()).unwrap_or(0)`
+                    // we don't want parentheses around macro, e.g. `(some_macro!()).unwrap_or(0)`
                     sugg::Sugg::hir_with_macro_callsite(cx, scrutinee, "..")
                 }
                 else {

clippy_lints/src/mem_discriminant.rs

@@ -36,9 +36,8 @@
 use clippy_utils::diagnostics::span_lint_and_help;
 use clippy_utils::source::{indent_of, snippet, snippet_block};
 use rustc_ast::ast;
-use rustc_lint::{EarlyContext, EarlyLintPass};
+use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_session::{declare_lint_pass, declare_tool_lint};
-use rustc_span::source_map::{original_sp, DUMMY_SP};
 use rustc_span::Span;
 
 declare_clippy_lint! {
@@ -270,7 +269,7 @@ struct LintData<'a> {
     /// The 0-based index of the `if` statement in the containing loop block.
     stmt_idx: usize,
     /// The statements of the loop block.
-    block_stmts: &'a [ast::Stmt],
+    loop_block: &'a ast::Block,
 }
 
 const MSG_REDUNDANT_CONTINUE_EXPRESSION: &str = "this `continue` expression is redundant";
@@ -343,10 +342,10 @@ fn suggestion_snippet_for_continue_inside_else<'a>(cx: &EarlyContext<'_>, data:
     let indent = span_of_first_expr_in_block(data.if_block)
         .and_then(|span| indent_of(cx, span))
         .unwrap_or(0);
-    let to_annex = data.block_stmts[data.stmt_idx + 1..]
+    let to_annex = data.loop_block.stmts[data.stmt_idx + 1..]
         .iter()
-        .map(|stmt| original_sp(stmt.span, DUMMY_SP))
-        .map(|span| {
+        .map(|stmt| {
+            let span = cx.sess().source_map().stmt_span(stmt.span, data.loop_block.span);
             let snip = snippet_block(cx, span, "..", None).into_owned();
             snip.lines()
                 .map(|line| format!("{}{}", " ".repeat(indent), line))
@@ -393,7 +392,7 @@ fn check_and_warn<'a>(cx: &EarlyContext<'_>, expr: &'a ast::Expr) {
                     if_cond: cond,
                     if_block: then_block,
                     else_expr,
-                    block_stmts: &loop_block.stmts,
+                    loop_block,
                 };
                 if needless_continue_in_else(else_expr, label) {
                     emit_warning(

clippy_lints/src/needless_continue.rs

@@ -770,8 +770,7 @@ impl<'tcx> LateLintPass<'tcx> for MatchTypeOnDiagItem {
             let segments: Vec<&str> = segments.iter().map(|sym| &**sym).collect();
             if let Some(ty_did) = path_to_res(cx, &segments[..]).opt_def_id();
             // Check if the matched type is a diagnostic item
-            let diag_items = cx.tcx.diagnostic_items(ty_did.krate);
-            if let Some(item_name) = diag_items.iter().find_map(|(k, v)| if *v == ty_did { Some(k) } else { None });
+            if let Some(item_name) = cx.tcx.get_diagnostic_name(ty_did);
             then {
                 // TODO: check paths constants from external crates.
                 let cx_snippet = snippet(cx, context.span, "_");

clippy_lints/src/utils/internal_lints.rs

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_utils"
-version = "0.1.57"
+version = "0.1.58"
 edition = "2021"
 publish = false
 

clippy_utils/Cargo.toml

@@ -722,7 +722,6 @@ impl PanicExpn<'tcx> {
             if let Some(init) = block.expr;
             if let ExprKind::Call(_, [format_args]) = init.kind;
             let expn_data = expr.span.ctxt().outer_expn_data();
-            if let ExprKind::AddrOf(_, _, format_args) = format_args.kind;
             if let Some(format_args) = FormatArgsExpn::parse(format_args);
             then {
                 Some(PanicExpn {

clippy_utils/src/higher.rs

@@ -1641,7 +1641,6 @@ pub fn match_panic_def_id(cx: &LateContext<'_>, did: DefId) -> bool {
         did,
         &[
             &paths::BEGIN_PANIC,
-            &paths::BEGIN_PANIC_FMT,
             &paths::PANIC_ANY,
             &paths::PANICKING_PANIC,
             &paths::PANICKING_PANIC_FMT,

clippy_utils/src/lib.rs

@@ -26,7 +26,6 @@ pub const ASSERT_NE_MACRO: [&str; 3] = ["core", "macros", "assert_ne"];
 pub const ASMUT_TRAIT: [&str; 3] = ["core", "convert", "AsMut"];
 pub const ASREF_TRAIT: [&str; 3] = ["core", "convert", "AsRef"];
 pub(super) const BEGIN_PANIC: [&str; 3] = ["std", "panicking", "begin_panic"];
-pub(super) const BEGIN_PANIC_FMT: [&str; 3] = ["std", "panicking", "begin_panic_fmt"];
 /// Preferably use the diagnostic item `sym::Borrow` where possible
 pub const BORROW_TRAIT: [&str; 3] = ["core", "borrow", "Borrow"];
 pub const BTREEMAP_CONTAINS_KEY: [&str; 6] = ["alloc", "collections", "btree", "map", "BTreeMap", "contains_key"];

clippy_utils/src/paths.rs

@@ -16,10 +16,10 @@ use std::convert::TryInto;
 use std::fmt::Display;
 use std::ops::{Add, Neg, Not, Sub};
 
-/// A helper type to build suggestion correctly handling parenthesis.
+/// A helper type to build suggestion correctly handling parentheses.
 #[derive(Clone, PartialEq)]
 pub enum Sugg<'a> {
-    /// An expression that never needs parenthesis such as `1337` or `[0; 42]`.
+    /// An expression that never needs parentheses such as `1337` or `[0; 42]`.
     NonParen(Cow<'a, str>),
     /// An expression that does not fit in other variants.
     MaybeParen(Cow<'a, str>),
@@ -283,7 +283,7 @@ impl<'a> Sugg<'a> {
         }
     }
 
-    /// Adds parenthesis to any expression that might need them. Suitable to the
+    /// Adds parentheses to any expression that might need them. Suitable to the
     /// `self` argument of a method call
     /// (e.g., to build `bar.foo()` or `(1 + 2).foo()`).
     pub fn maybe_par(self) -> Self {

clippy_utils/src/sugg.rs

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2021-10-07"
+channel = "nightly-2021-10-21"
 components = ["llvm-tools-preview", "rustc-dev", "rust-src"]

rust-toolchain

@@ -11,6 +11,6 @@ fn main() {
     Symbol::intern("foo") == rustc_span::sym::clippy;
     Symbol::intern("foo") == rustc_span::symbol::kw::SelfLower;
     Symbol::intern("foo") != rustc_span::symbol::kw::SelfUpper;
-    Ident::invalid().name == rustc_span::sym::clippy;
-    rustc_span::sym::clippy == Ident::invalid().name;
+    Ident::empty().name == rustc_span::sym::clippy;
+    rustc_span::sym::clippy == Ident::empty().name;
 }

tests/ui-internal/unnecessary_symbol_str.fixed

@@ -11,6 +11,6 @@ fn main() {
     Symbol::intern("foo").as_str() == "clippy";
     Symbol::intern("foo").to_string() == "self";
     Symbol::intern("foo").to_ident_string() != "Self";
-    &*Ident::invalid().as_str() == "clippy";
-    "clippy" == Ident::invalid().to_string();
+    &*Ident::empty().as_str() == "clippy";
+    "clippy" == Ident::empty().to_string();
 }

tests/ui-internal/unnecessary_symbol_str.rs

@@ -26,14 +26,14 @@ LL |     Symbol::intern("foo").to_ident_string() != "Self";
 error: unnecessary `Symbol` to string conversion
   --> $DIR/unnecessary_symbol_str.rs:14:5
    |
-LL |     &*Ident::invalid().as_str() == "clippy";
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Ident::invalid().name == rustc_span::sym::clippy`
+LL |     &*Ident::empty().as_str() == "clippy";
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `Ident::empty().name == rustc_span::sym::clippy`
 
 error: unnecessary `Symbol` to string conversion
   --> $DIR/unnecessary_symbol_str.rs:15:5
    |
-LL |     "clippy" == Ident::invalid().to_string();
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::sym::clippy == Ident::invalid().name`
+LL |     "clippy" == Ident::empty().to_string();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `rustc_span::sym::clippy == Ident::empty().name`
 
 error: aborting due to 5 previous errors