Auto merge of #4776 - mikerite:fix-4727, r=flip1995

Fix crash in `use-self` lint

Fixes #4727

changelog: Fix crash in `use-self` lint
This commit is contained in:
bors 2019-11-08 22:06:21 +00:00
commit b0b3dc6e76
6 changed files with 159 additions and 56 deletions

View File

@ -223,30 +223,32 @@ struct UseSelfVisitor<'a, 'tcx> {
impl<'a, 'tcx> Visitor<'tcx> for UseSelfVisitor<'a, 'tcx> {
fn visit_path(&mut self, path: &'tcx Path, _id: HirId) {
if path.segments.len() >= 2 {
let last_but_one = &path.segments[path.segments.len() - 2];
if last_but_one.ident.name != kw::SelfUpper {
let enum_def_id = match path.res {
Res::Def(DefKind::Variant, variant_def_id) => self.cx.tcx.parent(variant_def_id),
Res::Def(DefKind::Ctor(def::CtorOf::Variant, _), ctor_def_id) => {
let variant_def_id = self.cx.tcx.parent(ctor_def_id);
variant_def_id.and_then(|def_id| self.cx.tcx.parent(def_id))
},
_ => None,
};
if !path.segments.iter().any(|p| p.ident.span.is_dummy()) {
if path.segments.len() >= 2 {
let last_but_one = &path.segments[path.segments.len() - 2];
if last_but_one.ident.name != kw::SelfUpper {
let enum_def_id = match path.res {
Res::Def(DefKind::Variant, variant_def_id) => self.cx.tcx.parent(variant_def_id),
Res::Def(DefKind::Ctor(def::CtorOf::Variant, _), ctor_def_id) => {
let variant_def_id = self.cx.tcx.parent(ctor_def_id);
variant_def_id.and_then(|def_id| self.cx.tcx.parent(def_id))
},
_ => None,
};
if self.item_path.res.opt_def_id() == enum_def_id {
span_use_self_lint(self.cx, path, Some(last_but_one));
if self.item_path.res.opt_def_id() == enum_def_id {
span_use_self_lint(self.cx, path, Some(last_but_one));
}
}
}
}
if path.segments.last().expect(SEGMENTS_MSG).ident.name != kw::SelfUpper {
if self.item_path.res == path.res {
span_use_self_lint(self.cx, path, None);
} else if let Res::Def(DefKind::Ctor(def::CtorOf::Struct, _), ctor_def_id) = path.res {
if self.item_path.res.opt_def_id() == self.cx.tcx.parent(ctor_def_id) {
if path.segments.last().expect(SEGMENTS_MSG).ident.name != kw::SelfUpper {
if self.item_path.res == path.res {
span_use_self_lint(self.cx, path, None);
} else if let Res::Def(DefKind::Ctor(def::CtorOf::Struct, _), ctor_def_id) = path.res {
if self.item_path.res.opt_def_id() == self.cx.tcx.parent(ctor_def_id) {
span_use_self_lint(self.cx, path, None);
}
}
}
}

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@ -0,0 +1,9 @@
pub trait Trait {
fn fun(par: &str) -> &str;
}
impl Trait for str {
fn fun(par: &str) -> &str {
&par[0..1]
}
}

View File

@ -0,0 +1,8 @@
// run-pass
#![warn(clippy::use_self)]
#[path = "auxiliary/ice-4727-aux.rs"]
mod aux;
fn main() {}

View File

@ -1,4 +1,5 @@
// run-rustfix
// compile-flags: --edition 2018
#![warn(clippy::use_self)]
#![allow(dead_code)]
@ -332,3 +333,32 @@ mod issue3567 {
}
}
}
mod paths_created_by_lowering {
use std::ops::Range;
struct S {}
impl S {
const A: usize = 0;
const B: usize = 1;
async fn g() -> Self {
Self {}
}
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8] {
&p[Self::A..Self::B]
}
}
trait T {
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8];
}
impl T for Range<u8> {
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8] {
&p[0..1]
}
}
}

View File

@ -1,4 +1,5 @@
// run-rustfix
// compile-flags: --edition 2018
#![warn(clippy::use_self)]
#![allow(dead_code)]
@ -332,3 +333,32 @@ mod issue3567 {
}
}
}
mod paths_created_by_lowering {
use std::ops::Range;
struct S {}
impl S {
const A: usize = 0;
const B: usize = 1;
async fn g() -> S {
S {}
}
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8] {
&p[S::A..S::B]
}
}
trait T {
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8];
}
impl T for Range<u8> {
fn f<'a>(&self, p: &'a [u8]) -> &'a [u8] {
&p[0..1]
}
}
}

View File

@ -1,5 +1,5 @@
error: unnecessary structure name repetition
--> $DIR/use_self.rs:13:21
--> $DIR/use_self.rs:14:21
|
LL | fn new() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
@ -7,139 +7,139 @@ LL | fn new() -> Foo {
= note: `-D clippy::use-self` implied by `-D warnings`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:14:13
--> $DIR/use_self.rs:15:13
|
LL | Foo {}
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:16:22
--> $DIR/use_self.rs:17:22
|
LL | fn test() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:17:13
--> $DIR/use_self.rs:18:13
|
LL | Foo::new()
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:22:25
--> $DIR/use_self.rs:23:25
|
LL | fn default() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:23:13
--> $DIR/use_self.rs:24:13
|
LL | Foo::new()
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:88:22
--> $DIR/use_self.rs:89:22
|
LL | fn refs(p1: &Bad) -> &Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:88:31
--> $DIR/use_self.rs:89:31
|
LL | fn refs(p1: &Bad) -> &Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:92:37
--> $DIR/use_self.rs:93:37
|
LL | fn ref_refs<'a>(p1: &'a &'a Bad) -> &'a &'a Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:92:53
--> $DIR/use_self.rs:93:53
|
LL | fn ref_refs<'a>(p1: &'a &'a Bad) -> &'a &'a Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:96:30
--> $DIR/use_self.rs:97:30
|
LL | fn mut_refs(p1: &mut Bad) -> &mut Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:96:43
--> $DIR/use_self.rs:97:43
|
LL | fn mut_refs(p1: &mut Bad) -> &mut Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:100:28
--> $DIR/use_self.rs:101:28
|
LL | fn nested(_p1: Box<Bad>, _p2: (&u8, &Bad)) {}
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:100:46
--> $DIR/use_self.rs:101:46
|
LL | fn nested(_p1: Box<Bad>, _p2: (&u8, &Bad)) {}
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:102:20
--> $DIR/use_self.rs:103:20
|
LL | fn vals(_: Bad) -> Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:102:28
--> $DIR/use_self.rs:103:28
|
LL | fn vals(_: Bad) -> Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:103:13
--> $DIR/use_self.rs:104:13
|
LL | Bad::default()
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:108:23
--> $DIR/use_self.rs:109:23
|
LL | type Output = Bad;
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:110:27
--> $DIR/use_self.rs:111:27
|
LL | fn mul(self, rhs: Bad) -> Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:110:35
--> $DIR/use_self.rs:111:35
|
LL | fn mul(self, rhs: Bad) -> Bad {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:117:13
--> $DIR/use_self.rs:118:13
|
LL | Bad
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:199:56
--> $DIR/use_self.rs:200:56
|
LL | fn bad(foos: &[Self]) -> impl Iterator<Item = &Foo> {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:214:13
--> $DIR/use_self.rs:215:13
|
LL | TS(0)
| ^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:222:25
--> $DIR/use_self.rs:223:25
|
LL | fn new() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
@ -148,7 +148,7 @@ LL | use_self_expand!(); // Should lint in local macros
| ------------------- in this macro invocation
error: unnecessary structure name repetition
--> $DIR/use_self.rs:223:17
--> $DIR/use_self.rs:224:17
|
LL | Foo {}
| ^^^ help: use the applicable keyword: `Self`
@ -157,70 +157,94 @@ LL | use_self_expand!(); // Should lint in local macros
| ------------------- in this macro invocation
error: unnecessary structure name repetition
--> $DIR/use_self.rs:258:21
--> $DIR/use_self.rs:259:21
|
LL | fn baz() -> Foo {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:259:13
--> $DIR/use_self.rs:260:13
|
LL | Foo {}
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:246:29
--> $DIR/use_self.rs:247:29
|
LL | fn bar() -> Bar {
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:247:21
--> $DIR/use_self.rs:248:21
|
LL | Bar { foo: Foo {} }
| ^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:276:21
--> $DIR/use_self.rs:277:21
|
LL | let _ = Enum::B(42);
| ^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:277:21
--> $DIR/use_self.rs:278:21
|
LL | let _ = Enum::C { field: true };
| ^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:278:21
--> $DIR/use_self.rs:279:21
|
LL | let _ = Enum::A;
| ^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:309:13
--> $DIR/use_self.rs:310:13
|
LL | nested::A::fun_1();
| ^^^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:310:13
--> $DIR/use_self.rs:311:13
|
LL | nested::A::A;
| ^^^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:312:13
--> $DIR/use_self.rs:313:13
|
LL | nested::A {};
| ^^^^^^^^^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:331:13
--> $DIR/use_self.rs:332:13
|
LL | TestStruct::from_something()
| ^^^^^^^^^^ help: use the applicable keyword: `Self`
error: aborting due to 36 previous errors
error: unnecessary structure name repetition
--> $DIR/use_self.rs:346:25
|
LL | async fn g() -> S {
| ^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:347:13
|
LL | S {}
| ^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:351:16
|
LL | &p[S::A..S::B]
| ^ help: use the applicable keyword: `Self`
error: unnecessary structure name repetition
--> $DIR/use_self.rs:351:22
|
LL | &p[S::A..S::B]
| ^ help: use the applicable keyword: `Self`
error: aborting due to 40 previous errors