diff options
| -rw-r--r-- | compiler/rustc_lint/src/autorefs.rs | 4 | ||||
| -rw-r--r-- | tests/ui/lint/implicit_autorefs.fixed | 53 | ||||
| -rw-r--r-- | tests/ui/lint/implicit_autorefs.rs | 53 | ||||
| -rw-r--r-- | tests/ui/lint/implicit_autorefs.stderr | 84 |
4 files changed, 100 insertions, 94 deletions
diff --git a/compiler/rustc_lint/src/autorefs.rs b/compiler/rustc_lint/src/autorefs.rs index 5de2cbf9939..845a1f1b81f 100644 --- a/compiler/rustc_lint/src/autorefs.rs +++ b/compiler/rustc_lint/src/autorefs.rs @@ -16,7 +16,7 @@ declare_lint! { /// /// ### Example /// - /// ```rust + /// ```rust,compile_fail /// unsafe fn fun(ptr: *mut [u8]) -> *mut [u8] { /// unsafe { &raw mut (*ptr)[..16] } /// // ^^^^^^ this calls `IndexMut::index_mut(&mut ..., ..16)`, @@ -51,7 +51,7 @@ declare_lint! { /// } /// ``` pub DANGEROUS_IMPLICIT_AUTOREFS, - Warn, + Deny, "implicit reference to a dereference of a raw pointer", report_in_external_macro } diff --git a/tests/ui/lint/implicit_autorefs.fixed b/tests/ui/lint/implicit_autorefs.fixed index 454dfe76372..7aa21e77458 100644 --- a/tests/ui/lint/implicit_autorefs.fixed +++ b/tests/ui/lint/implicit_autorefs.fixed @@ -1,4 +1,4 @@ -//@ check-pass +//@ check-fail //@ run-rustfix #![allow(dead_code)] // For the rustfix-ed code. @@ -8,7 +8,7 @@ use std::ops::Deref; unsafe fn test_const(ptr: *const [u8]) { let _ = (&(*ptr))[..16]; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } struct Test { @@ -17,36 +17,36 @@ struct Test { unsafe fn test_field(ptr: *const Test) -> *const [u8] { let l = (&(*ptr).field).len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref &raw const (&(*ptr).field)[..l - 1] - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_builtin_index(a: *mut [String]) { _ = (&(*a)[0]).len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref _ = (&(&(*a))[..1][0]).len(); - //~^ WARN implicit autoref - //~^^ WARN implicit autoref + //~^ ERROR implicit autoref + //~^^ ERROR implicit autoref } unsafe fn test_overloaded_deref_const(ptr: *const ManuallyDrop<Test>) { let _ = (&(*ptr)).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = &raw const (&(*ptr)).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_overloaded_deref_mut(ptr: *mut ManuallyDrop<Test>) { let _ = (&(*ptr)).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_double_overloaded_deref_const(ptr: *const ManuallyDrop<ManuallyDrop<Test>>) { let _ = (&(*ptr)).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_manually_overloaded_deref() { @@ -54,52 +54,55 @@ unsafe fn test_manually_overloaded_deref() { impl<T> Deref for W<T> { type Target = T; - fn deref(&self) -> &T { &self.0 } + fn deref(&self) -> &T { + &self.0 + } } let w: W<i32> = W(5); let w = &raw const w; let _p: *const i32 = &raw const *(&**w); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } struct Test2 { // Derefs to `[u8]`. - field: &'static [u8] + field: &'static [u8], } fn test_more_manual_deref(ptr: *const Test2) -> usize { unsafe { (&(*ptr).field).len() } - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_no_attr(ptr: *mut ManuallyDrop<u8>) { - ptr.write(ManuallyDrop::new(1)); // Should not warn, as `ManuallyDrop::write` is not - // annotated with `#[rustc_no_implicit_auto_ref]` + // Should not warn, as `ManuallyDrop::write` is not + // annotated with `#[rustc_no_implicit_auto_ref]` + ptr.write(ManuallyDrop::new(1)); } unsafe fn test_vec_get(ptr: *mut Vec<u8>) { let _ = (&(*ptr)).get(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (&(*ptr)).get_unchecked(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (&mut (*ptr)).get_mut(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (&mut (*ptr)).get_unchecked_mut(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_string(ptr: *mut String) { let _ = (&(*ptr)).len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (&(*ptr)).is_empty(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn slice_ptr_len_because_of_msrv<T>(slice: *const [T]) { let _ = (&(&(*slice))[..]).len(); - //~^ WARN implicit autoref - //~^^ WARN implicit autoref + //~^ ERROR implicit autoref + //~^^ ERROR implicit autoref } fn main() {} diff --git a/tests/ui/lint/implicit_autorefs.rs b/tests/ui/lint/implicit_autorefs.rs index 507d6536828..f33cb08e985 100644 --- a/tests/ui/lint/implicit_autorefs.rs +++ b/tests/ui/lint/implicit_autorefs.rs @@ -1,4 +1,4 @@ -//@ check-pass +//@ check-fail //@ run-rustfix #![allow(dead_code)] // For the rustfix-ed code. @@ -8,7 +8,7 @@ use std::ops::Deref; unsafe fn test_const(ptr: *const [u8]) { let _ = (*ptr)[..16]; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } struct Test { @@ -17,36 +17,36 @@ struct Test { unsafe fn test_field(ptr: *const Test) -> *const [u8] { let l = (*ptr).field.len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref &raw const (*ptr).field[..l - 1] - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_builtin_index(a: *mut [String]) { _ = (*a)[0].len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref _ = (*a)[..1][0].len(); - //~^ WARN implicit autoref - //~^^ WARN implicit autoref + //~^ ERROR implicit autoref + //~^^ ERROR implicit autoref } unsafe fn test_overloaded_deref_const(ptr: *const ManuallyDrop<Test>) { let _ = (*ptr).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = &raw const (*ptr).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_overloaded_deref_mut(ptr: *mut ManuallyDrop<Test>) { let _ = (*ptr).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_double_overloaded_deref_const(ptr: *const ManuallyDrop<ManuallyDrop<Test>>) { let _ = (*ptr).field; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_manually_overloaded_deref() { @@ -54,52 +54,55 @@ unsafe fn test_manually_overloaded_deref() { impl<T> Deref for W<T> { type Target = T; - fn deref(&self) -> &T { &self.0 } + fn deref(&self) -> &T { + &self.0 + } } let w: W<i32> = W(5); let w = &raw const w; let _p: *const i32 = &raw const **w; - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } struct Test2 { // Derefs to `[u8]`. - field: &'static [u8] + field: &'static [u8], } fn test_more_manual_deref(ptr: *const Test2) -> usize { unsafe { (*ptr).field.len() } - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_no_attr(ptr: *mut ManuallyDrop<u8>) { - ptr.write(ManuallyDrop::new(1)); // Should not warn, as `ManuallyDrop::write` is not - // annotated with `#[rustc_no_implicit_auto_ref]` + // Should not warn, as `ManuallyDrop::write` is not + // annotated with `#[rustc_no_implicit_auto_ref]` + ptr.write(ManuallyDrop::new(1)); } unsafe fn test_vec_get(ptr: *mut Vec<u8>) { let _ = (*ptr).get(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (*ptr).get_unchecked(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (*ptr).get_mut(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (*ptr).get_unchecked_mut(0); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn test_string(ptr: *mut String) { let _ = (*ptr).len(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref let _ = (*ptr).is_empty(); - //~^ WARN implicit autoref + //~^ ERROR implicit autoref } unsafe fn slice_ptr_len_because_of_msrv<T>(slice: *const [T]) { let _ = (*slice)[..].len(); - //~^ WARN implicit autoref - //~^^ WARN implicit autoref + //~^ ERROR implicit autoref + //~^^ ERROR implicit autoref } fn main() {} diff --git a/tests/ui/lint/implicit_autorefs.stderr b/tests/ui/lint/implicit_autorefs.stderr index 80ba8ae2fd2..bd914e2998a 100644 --- a/tests/ui/lint/implicit_autorefs.stderr +++ b/tests/ui/lint/implicit_autorefs.stderr @@ -1,4 +1,4 @@ -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:10:13 | LL | let _ = (*ptr)[..16]; @@ -12,13 +12,13 @@ note: autoref is being applied to this expression, resulting in: `&[u8]` | LL | let _ = (*ptr)[..16]; | ^^^^^^ - = note: `#[warn(dangerous_implicit_autorefs)]` on by default + = note: `#[deny(dangerous_implicit_autorefs)]` on by default help: try using a raw pointer method instead; or if this reference is intentional, make it explicit | LL | let _ = (&(*ptr))[..16]; | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:19:13 | LL | let l = (*ptr).field.len(); @@ -39,7 +39,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let l = (&(*ptr).field).len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:22:16 | LL | &raw const (*ptr).field[..l - 1] @@ -58,7 +58,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | &raw const (&(*ptr).field)[..l - 1] | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:27:9 | LL | _ = (*a)[0].len(); @@ -79,7 +79,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | _ = (&(*a)[0]).len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:30:9 | LL | _ = (*a)[..1][0].len(); @@ -100,7 +100,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | _ = (&(*a)[..1][0]).len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:30:9 | LL | _ = (*a)[..1][0].len(); @@ -119,7 +119,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | _ = (&(*a))[..1][0].len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:36:13 | LL | let _ = (*ptr).field; @@ -134,7 +134,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).field; | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:38:24 | LL | let _ = &raw const (*ptr).field; @@ -149,7 +149,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = &raw const (&(*ptr)).field; | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:43:13 | LL | let _ = (*ptr).field; @@ -164,7 +164,7 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).field; | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer +error: implicit autoref creates a reference to the dereference of a raw pointer --> $DIR/implicit_autorefs.rs:48:13 | LL | let _ = (*ptr).field; @@ -179,8 +179,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).field; | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:62:26 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:64:26 | LL | let _p: *const i32 = &raw const **w; | ^^^^^^^^^^^^^- @@ -189,7 +189,7 @@ LL | let _p: *const i32 = &raw const **w; | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&W<i32>` - --> $DIR/implicit_autorefs.rs:62:38 + --> $DIR/implicit_autorefs.rs:64:38 | LL | let _p: *const i32 = &raw const **w; | ^^ @@ -198,8 +198,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _p: *const i32 = &raw const *(&**w); | +++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:72:14 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:74:14 | LL | unsafe { (*ptr).field.len() } | ^^---^^^^^^^^^^^^^ @@ -208,7 +208,7 @@ LL | unsafe { (*ptr).field.len() } | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&[u8]` - --> $DIR/implicit_autorefs.rs:72:14 + --> $DIR/implicit_autorefs.rs:74:14 | LL | unsafe { (*ptr).field.len() } | ^^^^^^^^^^^^ @@ -219,8 +219,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | unsafe { (&(*ptr).field).len() } | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:82:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:85:13 | LL | let _ = (*ptr).get(0); | ^^---^^^^^^^^ @@ -229,7 +229,7 @@ LL | let _ = (*ptr).get(0); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&[u8]` - --> $DIR/implicit_autorefs.rs:82:13 + --> $DIR/implicit_autorefs.rs:85:13 | LL | let _ = (*ptr).get(0); | ^^^^^^ @@ -240,8 +240,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).get(0); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:84:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:87:13 | LL | let _ = (*ptr).get_unchecked(0); | ^^---^^^^^^^^^^^^^^^^^^ @@ -250,7 +250,7 @@ LL | let _ = (*ptr).get_unchecked(0); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&[u8]` - --> $DIR/implicit_autorefs.rs:84:13 + --> $DIR/implicit_autorefs.rs:87:13 | LL | let _ = (*ptr).get_unchecked(0); | ^^^^^^ @@ -261,8 +261,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).get_unchecked(0); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:86:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:89:13 | LL | let _ = (*ptr).get_mut(0); | ^^---^^^^^^^^^^^^ @@ -271,7 +271,7 @@ LL | let _ = (*ptr).get_mut(0); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&mut [u8]` - --> $DIR/implicit_autorefs.rs:86:13 + --> $DIR/implicit_autorefs.rs:89:13 | LL | let _ = (*ptr).get_mut(0); | ^^^^^^ @@ -282,8 +282,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&mut (*ptr)).get_mut(0); | +++++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:88:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:91:13 | LL | let _ = (*ptr).get_unchecked_mut(0); | ^^---^^^^^^^^^^^^^^^^^^^^^^ @@ -292,7 +292,7 @@ LL | let _ = (*ptr).get_unchecked_mut(0); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&mut [u8]` - --> $DIR/implicit_autorefs.rs:88:13 + --> $DIR/implicit_autorefs.rs:91:13 | LL | let _ = (*ptr).get_unchecked_mut(0); | ^^^^^^ @@ -303,8 +303,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&mut (*ptr)).get_unchecked_mut(0); | +++++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:93:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:96:13 | LL | let _ = (*ptr).len(); | ^^---^^^^^^^ @@ -313,7 +313,7 @@ LL | let _ = (*ptr).len(); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&String` - --> $DIR/implicit_autorefs.rs:93:13 + --> $DIR/implicit_autorefs.rs:96:13 | LL | let _ = (*ptr).len(); | ^^^^^^ @@ -324,8 +324,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:95:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:98:13 | LL | let _ = (*ptr).is_empty(); | ^^---^^^^^^^^^^^^ @@ -334,7 +334,7 @@ LL | let _ = (*ptr).is_empty(); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&String` - --> $DIR/implicit_autorefs.rs:95:13 + --> $DIR/implicit_autorefs.rs:98:13 | LL | let _ = (*ptr).is_empty(); | ^^^^^^ @@ -345,8 +345,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*ptr)).is_empty(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:100:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:103:13 | LL | let _ = (*slice)[..].len(); | ^^-----^^^^^^^^^^^ @@ -355,7 +355,7 @@ LL | let _ = (*slice)[..].len(); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&[T]` - --> $DIR/implicit_autorefs.rs:100:13 + --> $DIR/implicit_autorefs.rs:103:13 | LL | let _ = (*slice)[..].len(); | ^^^^^^^^^^^^ @@ -366,8 +366,8 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*slice)[..]).len(); | ++ + -warning: implicit autoref creates a reference to the dereference of a raw pointer - --> $DIR/implicit_autorefs.rs:100:13 +error: implicit autoref creates a reference to the dereference of a raw pointer + --> $DIR/implicit_autorefs.rs:103:13 | LL | let _ = (*slice)[..].len(); | ^^-----^^^^^ @@ -376,7 +376,7 @@ LL | let _ = (*slice)[..].len(); | = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements note: autoref is being applied to this expression, resulting in: `&[T]` - --> $DIR/implicit_autorefs.rs:100:13 + --> $DIR/implicit_autorefs.rs:103:13 | LL | let _ = (*slice)[..].len(); | ^^^^^^^^ @@ -385,5 +385,5 @@ help: try using a raw pointer method instead; or if this reference is intentiona LL | let _ = (&(*slice))[..].len(); | ++ + -warning: 20 warnings emitted +error: aborting due to 20 previous errors |