implicit_unsafe_autorefs: make the lint warn by default

Author: WaffleLapkin

compiler/rustc_lint/src/implicit_unsafe_autorefs.rs

@@ -43,7 +43,7 @@ declare_lint! {
     /// }
     /// ```
     pub IMPLICIT_UNSAFE_AUTOREFS,
-    Deny,
+    Warn,
     "implicit reference to a dereference of a raw pointer"
 }
 

src/test/ui/lint/implicit_unsafe_autorefs.fixed

@@ -1,14 +1,15 @@
+// check-pass
 // run-rustfix
 use std::ptr::{addr_of, addr_of_mut};
 
 unsafe fn _test_mut(ptr: *mut [u8]) -> *mut [u8] {
     addr_of_mut!((&mut (*ptr))[..16])
-    //~^ error: implicit auto-ref creates a reference to a dereference of a raw pointer
+    //~^ warn: implicit auto-ref creates a reference to a dereference of a raw pointer
 }
 
 unsafe fn _test_const(ptr: *const [u8]) -> *const [u8] {
     addr_of!((&(*ptr))[..16])
-    //~^ error: implicit auto-ref creates a reference to a dereference of a raw pointer
+    //~^ warn: implicit auto-ref creates a reference to a dereference of a raw pointer
 }
 
 fn main() {}

src/test/ui/lint/implicit_unsafe_autorefs.rs

@@ -1,14 +1,15 @@
+// check-pass
 // run-rustfix
 use std::ptr::{addr_of, addr_of_mut};
 
 unsafe fn _test_mut(ptr: *mut [u8]) -> *mut [u8] {
     addr_of_mut!((*ptr)[..16])
-    //~^ error: implicit auto-ref creates a reference to a dereference of a raw pointer
+    //~^ warn: implicit auto-ref creates a reference to a dereference of a raw pointer
 }
 
 unsafe fn _test_const(ptr: *const [u8]) -> *const [u8] {
     addr_of!((*ptr)[..16])
-    //~^ error: implicit auto-ref creates a reference to a dereference of a raw pointer
+    //~^ warn: implicit auto-ref creates a reference to a dereference of a raw pointer
 }
 
 fn main() {}

src/test/ui/lint/implicit_unsafe_autorefs.stderr

@@ -1,18 +1,18 @@
-error: implicit auto-ref creates a reference to a dereference of a raw pointer
-  --> $DIR/implicit_unsafe_autorefs.rs:5:18
+warning: implicit auto-ref creates a reference to a dereference of a raw pointer
+  --> $DIR/implicit_unsafe_autorefs.rs:6:18
    |
 LL |     addr_of_mut!((*ptr)[..16])
    |                  ^^^^^^
    |
    = note: creating a reference requires the pointer to be valid and imposes aliasing requirements
-   = note: `#[deny(implicit_unsafe_autorefs)]` on by default
+   = note: `#[warn(implicit_unsafe_autorefs)]` on by default
 help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
    |
 LL |     addr_of_mut!((&mut (*ptr))[..16])
    |                  +++++       +
 
-error: implicit auto-ref creates a reference to a dereference of a raw pointer
-  --> $DIR/implicit_unsafe_autorefs.rs:10:14
+warning: implicit auto-ref creates a reference to a dereference of a raw pointer
+  --> $DIR/implicit_unsafe_autorefs.rs:11:14
    |
 LL |     addr_of!((*ptr)[..16])
    |              ^^^^^^
@@ -23,5 +23,5 @@ help: try using a raw pointer method instead; or if this reference is intentiona
 LL |     addr_of!((&(*ptr))[..16])
    |              ++      +
 
-error: aborting due to 2 previous errors
+warning: 2 warnings emitted