1 // Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Some lints that are built in to the compiler.
13 //! These are the built-in lints that are emitted direct in the main
14 //! compiler code, rather than using their own custom pass. Those
15 //! lints are all available in `rustc_lint::builtin`.
17 use lint::{LintPass, LateLintPass, LintArray};
22 "constant evaluation detected erroneous expression"
28 "imports that are never used"
32 pub UNUSED_EXTERN_CRATES,
34 "extern crates that are never used"
38 pub UNUSED_QUALIFICATIONS,
40 "detects unnecessarily qualified names"
46 "unrecognized lint attribute"
52 "detect variables which are not used in any way"
56 pub UNUSED_ASSIGNMENTS,
58 "detect assignments that will never be read"
64 "detect unused, unexported items"
70 "detects unreachable code paths"
76 "mass-change the level for lints which produce warnings"
82 "unused or unknown features found in crate-level #[feature] directives"
88 "stable features found in #[feature] directive"
92 pub UNKNOWN_CRATE_TYPES,
94 "unknown crate type found in #[crate_type] directive"
98 pub VARIANT_SIZE_DIFFERENCES,
100 "detects enums with widely varying variant sizes"
104 pub FAT_PTR_TRANSMUTES,
106 "detects transmutes of fat pointers"
112 "detects trivial casts which could be removed"
116 pub TRIVIAL_NUMERIC_CASTS,
118 "detects trivial casts of numeric types which could be removed"
122 pub PRIVATE_IN_PUBLIC,
124 "detect private items in public interfaces not caught by the old implementation"
128 pub INACCESSIBLE_EXTERN_CRATE,
130 "use of inaccessible extern crate erroneously allowed"
134 pub INVALID_TYPE_PARAM_DEFAULT,
136 "type parameter default erroneously allowed in invalid location"
140 pub MATCH_OF_UNIT_VARIANT_VIA_PAREN_DOTDOT,
142 "unit struct or enum variant erroneously allowed to match via path::ident(..)"
146 pub RAW_POINTER_DERIVE,
148 "uses of #[derive] with raw pointers are rarely correct"
152 pub TRANSMUTE_FROM_FN_ITEM_TYPES,
154 "transmute from function item type to pointer-sized type erroneously allowed"
158 pub OVERLAPPING_INHERENT_IMPLS,
160 "two overlapping inherent impls define an item with the same name were erroneously allowed"
163 /// Does nothing as a lint pass, but registers some `Lint`s
164 /// which are used by other parts of the compiler.
165 #[derive(Copy, Clone)]
166 pub struct HardwiredLints;
168 impl LintPass for HardwiredLints {
169 fn get_lints(&self) -> LintArray {
172 UNUSED_EXTERN_CRATES,
173 UNUSED_QUALIFICATIONS,
183 VARIANT_SIZE_DIFFERENCES,
186 TRIVIAL_NUMERIC_CASTS,
188 INACCESSIBLE_EXTERN_CRATE,
189 INVALID_TYPE_PARAM_DEFAULT,
190 MATCH_OF_UNIT_VARIANT_VIA_PAREN_DOTDOT,
193 TRANSMUTE_FROM_FN_ITEM_TYPES,
194 OVERLAPPING_INHERENT_IMPLS
199 impl LateLintPass for HardwiredLints {}