Auto merge of rust-lang#87337 - jyn514:lint-error, r=oli-obk,flip1995

Don't abort compilation after giving a lint error

The only reason to use `abort_if_errors` is when the program is so broken that either:
1. later passes get confused and ICE
2. any diagnostics from later passes would be noise

This is never the case for lints, because the compiler has to be able to deal with `allow`-ed lints.
So it can continue to lint and compile even if there are lint errors.

Closes rust-lang#82761. This is a WIP because I have a feeling it will exit with 0 even if there were lint errors; I don't have a computer that can build rustc locally at the moment.

tests/ui-toml/lint_decimal_readability/test.rs

@@ -1,3 +1,4 @@
+#![allow(clippy::excessive_precision)]
 #[deny(clippy::unreadable_literal)]
 
 fn allow_inconsistent_digit_grouping() {

tests/ui-toml/lint_decimal_readability/test.stderr

@@ -1,5 +1,5 @@
 error: digits grouped inconsistently by underscores
-  --> $DIR/test.rs:18:18
+  --> $DIR/test.rs:19:18
    |
 LL |     let _fail1 = 100_200_300.123456789;
    |                  ^^^^^^^^^^^^^^^^^^^^^ help: consider: `100_200_300.123_456_789`

tests/ui/deref_addrof.fixed

@@ -52,12 +52,14 @@ macro_rules! m_mut {
     };
 }
 
+#[derive(Copy, Clone)]
 pub struct S;
 impl S {
     pub fn f(&self) -> &Self {
         m!(self)
     }
-    pub fn f_mut(&self) -> &Self {
+    #[allow(unused_mut)] // mut will be unused, once the macro is fixed
+    pub fn f_mut(mut self) -> Self {
         m_mut!(self)
     }
 }

tests/ui/deref_addrof.rs

@@ -52,12 +52,14 @@ macro_rules! m_mut {
     };
 }
 
+#[derive(Copy, Clone)]
 pub struct S;
 impl S {
     pub fn f(&self) -> &Self {
         m!(self)
     }
-    pub fn f_mut(&self) -> &Self {
+    #[allow(unused_mut)] // mut will be unused, once the macro is fixed
+    pub fn f_mut(mut self) -> Self {
         m_mut!(self)
     }
 }

tests/ui/double_neg.rs

@@ -1,4 +1,5 @@
 #[warn(clippy::double_neg)]
+#[allow(clippy::no_effect)]
 fn main() {
     let x = 1;
     -x;

tests/ui/double_neg.stderr

@@ -1,5 +1,5 @@
 error: `--x` could be misinterpreted as pre-decrement by C programmers, is usually a no-op
-  --> $DIR/double_neg.rs:6:5
+  --> $DIR/double_neg.rs:7:5
    |
 LL |     --x;
    |     ^^^

tests/ui/fn_params_excessive_bools.rs

@@ -1,4 +1,5 @@
 #![warn(clippy::fn_params_excessive_bools)]
+#![allow(clippy::too_many_arguments)]
 
 extern "C" {
     fn f(_: bool, _: bool, _: bool, _: bool);

tests/ui/fn_params_excessive_bools.stderr

@@ -1,5 +1,5 @@
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:17:1
+  --> $DIR/fn_params_excessive_bools.rs:18:1
    |
 LL | fn g(_: bool, _: bool, _: bool, _: bool) {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -8,31 +8,31 @@ LL | fn g(_: bool, _: bool, _: bool, _: bool) {}
    = help: consider refactoring bools into two-variant enums
 
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:20:1
+  --> $DIR/fn_params_excessive_bools.rs:21:1
    |
 LL | fn t(_: S, _: S, _: Box<S>, _: Vec<u32>, _: bool, _: bool, _: bool, _: bool) {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider refactoring bools into two-variant enums
 
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:24:5
+  --> $DIR/fn_params_excessive_bools.rs:25:5
    |
 LL |     fn f(_: bool, _: bool, _: bool, _: bool);
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider refactoring bools into two-variant enums
 
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:29:5
+  --> $DIR/fn_params_excessive_bools.rs:30:5
    |
 LL |     fn f(&self, _: bool, _: bool, _: bool, _: bool) {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider refactoring bools into two-variant enums
 
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:41:5
+  --> $DIR/fn_params_excessive_bools.rs:42:5
    |
 LL | /     fn n(_: bool, _: u32, _: bool, _: Box<u32>, _: bool, _: bool) {
 LL | |         fn nn(_: bool, _: bool, _: bool, _: bool) {}
@@ -42,7 +42,7 @@ LL | |     }
    = help: consider refactoring bools into two-variant enums
 
 error: more than 3 bools in function parameters
-  --> $DIR/fn_params_excessive_bools.rs:42:9
+  --> $DIR/fn_params_excessive_bools.rs:43:9
    |
 LL |         fn nn(_: bool, _: bool, _: bool, _: bool) {}
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/ui/formatting.rs

@@ -3,6 +3,7 @@
 #![allow(unused_assignments)]
 #![allow(clippy::if_same_then_else)]
 #![allow(clippy::deref_addrof)]
+#![allow(clippy::nonminimal_bool)]
 
 fn foo() -> bool {
     true

tests/ui/formatting.stderr

@@ -1,5 +1,5 @@
 error: this looks like you are trying to use `.. -= ..`, but you really are doing `.. = (- ..)`
-  --> $DIR/formatting.rs:15:6
+  --> $DIR/formatting.rs:16:6
    |
 LL |     a =- 35;
    |      ^^^^
@@ -8,23 +8,23 @@ LL |     a =- 35;
    = note: to remove this lint, use either `-=` or `= -`
 
 error: this looks like you are trying to use `.. *= ..`, but you really are doing `.. = (* ..)`
-  --> $DIR/formatting.rs:16:6
+  --> $DIR/formatting.rs:17:6
    |
 LL |     a =* &191;
    |      ^^^^
    |
    = note: to remove this lint, use either `*=` or `= *`
 
 error: this looks like you are trying to use `.. != ..`, but you really are doing `.. = (! ..)`
-  --> $DIR/formatting.rs:19:6
+  --> $DIR/formatting.rs:20:6
    |
 LL |     b =! false;
    |      ^^^^
    |
    = note: to remove this lint, use either `!=` or `= !`
 
 error: possibly missing a comma here
-  --> $DIR/formatting.rs:28:19
+  --> $DIR/formatting.rs:29:19
    |
 LL |         -1, -2, -3 // <= no comma here
    |                   ^
@@ -33,15 +33,15 @@ LL |         -1, -2, -3 // <= no comma here
    = note: to remove this lint, add a comma or write the expr in a single line
 
 error: possibly missing a comma here
-  --> $DIR/formatting.rs:32:19
+  --> $DIR/formatting.rs:33:19
    |
 LL |         -1, -2, -3 // <= no comma here
    |                   ^
    |
    = note: to remove this lint, add a comma or write the expr in a single line
 
 error: possibly missing a comma here
-  --> $DIR/formatting.rs:69:11
+  --> $DIR/formatting.rs:70:11
    |
 LL |         -1
    |           ^

tests/ui/literals.rs

@@ -4,7 +4,7 @@
 #![warn(clippy::zero_prefixed_literal)]
 #![warn(clippy::unseparated_literal_suffix)]
 #![warn(clippy::separated_literal_suffix)]
-#![allow(dead_code)]
+#![allow(dead_code, overflowing_literals)]
 
 fn main() {
     let ok1 = 0xABCD;

tests/ui/many_single_char_names.rs

@@ -1,3 +1,4 @@
+#![allow(clippy::too_many_arguments, clippy::diverging_sub_expression)]
 #![warn(clippy::many_single_char_names)]
 
 fn bla() {

tests/ui/many_single_char_names.stderr

@@ -1,5 +1,5 @@
 error: 5 bindings with single-character names in scope
-  --> $DIR/many_single_char_names.rs:4:9
+  --> $DIR/many_single_char_names.rs:5:9
    |
 LL |     let a: i32;
    |         ^
@@ -12,7 +12,7 @@ LL |             let e: i32;
    = note: `-D clippy::many-single-char-names` implied by `-D warnings`
 
 error: 6 bindings with single-character names in scope
-  --> $DIR/many_single_char_names.rs:4:9
+  --> $DIR/many_single_char_names.rs:5:9
    |
 LL |     let a: i32;
    |         ^
@@ -25,7 +25,7 @@ LL |             let f: i32;
    |                 ^
 
 error: 5 bindings with single-character names in scope
-  --> $DIR/many_single_char_names.rs:4:9
+  --> $DIR/many_single_char_names.rs:5:9
    |
 LL |     let a: i32;
    |         ^
@@ -36,13 +36,13 @@ LL |             e => panic!(),
    |             ^
 
 error: 8 bindings with single-character names in scope
-  --> $DIR/many_single_char_names.rs:29:13
+  --> $DIR/many_single_char_names.rs:30:13
    |
 LL | fn bindings(a: i32, b: i32, c: i32, d: i32, e: i32, f: i32, g: i32, h: i32) {}
    |             ^       ^       ^       ^       ^       ^       ^       ^
 
 error: 8 bindings with single-character names in scope
-  --> $DIR/many_single_char_names.rs:32:10
+  --> $DIR/many_single_char_names.rs:33:10
    |
 LL |     let (a, b, c, d, e, f, g, h): (bool, bool, bool, bool, bool, bool, bool, bool) = unimplemented!();
    |          ^  ^  ^  ^  ^  ^  ^  ^

tests/ui/mistyped_literal_suffix.fixed

@@ -3,6 +3,7 @@
 #![allow(
     dead_code,
     unused_variables,
+    overflowing_literals,
     clippy::excessive_precision,
     clippy::inconsistent_digit_grouping
 )]
@@ -21,7 +22,6 @@ fn main() {
     let fail25 = 1E2_f32;
     let fail26 = 43E7_f64;
     let fail27 = 243E17_f32;
-    #[allow(overflowing_literals)]
     let fail28 = 241_251_235E723_f64;
     let ok29 = 42279.911_32;
 

tests/ui/mistyped_literal_suffix.rs

@@ -3,6 +3,7 @@
 #![allow(
     dead_code,
     unused_variables,
+    overflowing_literals,
     clippy::excessive_precision,
     clippy::inconsistent_digit_grouping
 )]
@@ -21,7 +22,6 @@ fn main() {
     let fail25 = 1E2_32;
     let fail26 = 43E7_64;
     let fail27 = 243E17_32;
-    #[allow(overflowing_literals)]
     let fail28 = 241251235E723_64;
     let ok29 = 42279.911_32;
 

tests/ui/mistyped_literal_suffix.stderr

@@ -1,55 +1,55 @@
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:11:18
+  --> $DIR/mistyped_literal_suffix.rs:12:18
    |
 LL |     let fail14 = 2_32;
    |                  ^^^^ help: did you mean to write: `2_i32`
    |
    = note: `#[deny(clippy::mistyped_literal_suffixes)]` on by default
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:12:18
+  --> $DIR/mistyped_literal_suffix.rs:13:18
    |
 LL |     let fail15 = 4_64;
    |                  ^^^^ help: did you mean to write: `4_i64`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:13:18
+  --> $DIR/mistyped_literal_suffix.rs:14:18
    |
 LL |     let fail16 = 7_8; //
    |                  ^^^ help: did you mean to write: `7_i8`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:14:18
+  --> $DIR/mistyped_literal_suffix.rs:15:18
    |
 LL |     let fail17 = 23_16; //
    |                  ^^^^^ help: did you mean to write: `23_i16`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:17:18
+  --> $DIR/mistyped_literal_suffix.rs:18:18
    |
 LL |     let fail20 = 2__8; //
    |                  ^^^^ help: did you mean to write: `2_i8`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:18:18
+  --> $DIR/mistyped_literal_suffix.rs:19:18
    |
 LL |     let fail21 = 4___16; //
    |                  ^^^^^^ help: did you mean to write: `4_i16`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:21:18
+  --> $DIR/mistyped_literal_suffix.rs:22:18
    |
 LL |     let fail25 = 1E2_32;
    |                  ^^^^^^ help: did you mean to write: `1E2_f32`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:22:18
+  --> $DIR/mistyped_literal_suffix.rs:23:18
    |
 LL |     let fail26 = 43E7_64;
    |                  ^^^^^^^ help: did you mean to write: `43E7_f64`
 
 error: mistyped literal suffix
-  --> $DIR/mistyped_literal_suffix.rs:23:18
+  --> $DIR/mistyped_literal_suffix.rs:24:18
    |
 LL |     let fail27 = 243E17_32;
    |                  ^^^^^^^^^ help: did you mean to write: `243E17_f32`

tests/ui/needless_arbitrary_self_type_unfixable.rs

@@ -38,6 +38,7 @@ mod issue_6089 {
     //  fn call_with_mut_self<'life0>(self: &'life0 mut Self) {}
     #[rename_my_lifetimes]
     impl T2 for S2 {
+        #[allow(clippy::needless_lifetimes)]
         fn call_with_mut_self(self: &mut Self) {}
     }
 }

tests/ui/needless_arbitrary_self_type_unfixable.stderr

@@ -1,5 +1,5 @@
 error: the type of the `self` parameter does not need to be arbitrary
-  --> $DIR/needless_arbitrary_self_type_unfixable.rs:41:31
+  --> $DIR/needless_arbitrary_self_type_unfixable.rs:42:31
    |
 LL |         fn call_with_mut_self(self: &mut Self) {}
    |                               ^^^^^^^^^^^^^^^ help: consider to change this parameter to: `&'_ mut self`

tests/ui/needless_continue.rs

@@ -12,6 +12,7 @@ macro_rules! nonzero {
     };
 }
 
+#[allow(clippy::nonminimal_bool)]
 fn main() {
     let mut i = 1;
     while i < 10 {