Auto merge of #7294 - stevenengler:unsafe-ptr-deref-msg, r=Manishearth

Improve message for `not_unsafe_ptr_arg_deref` lint

changelog: Improved message for the ['not_unsafe_ptr_arg_deref'] lint

Doesn't close any issue, but implements a suggestion from #3045 (comment).

Author: bors

clippy_lints/src/functions/not_unsafe_ptr_arg_deref.rs

@@ -116,7 +116,7 @@ impl<'a, 'tcx> DerefVisitor<'a, 'tcx> {
                     self.cx,
                     NOT_UNSAFE_PTR_ARG_DEREF,
                     ptr.span,
-                    "this public function dereferences a raw pointer but is not marked `unsafe`",
+                    "this public function might dereference a raw pointer but is not marked `unsafe`",
                 );
             }
         }

tests/ui/functions.stderr

@@ -30,57 +30,57 @@ error: this function has too many arguments (8/7)
 LL |     fn bad_method(_one: u32, _two: u32, _three: &str, _four: bool, _five: f32, _six: f32, _seven: bool, _eight: ()) {}
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:63:34
    |
 LL |         println!("{}", unsafe { *p });
    |                                  ^
    |
    = note: `-D clippy::not-unsafe-ptr-arg-deref` implied by `-D warnings`
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:64:35
    |
 LL |         println!("{:?}", unsafe { p.as_ref() });
    |                                   ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:65:33
    |
 LL |         unsafe { std::ptr::read(p) };
    |                                 ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:76:30
    |
 LL |     println!("{}", unsafe { *p });
    |                              ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:77:31
    |
 LL |     println!("{:?}", unsafe { p.as_ref() });
    |                               ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:78:29
    |
 LL |     unsafe { std::ptr::read(p) };
    |                             ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:87:34
    |
 LL |         println!("{}", unsafe { *p });
    |                                  ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:88:35
    |
 LL |         println!("{:?}", unsafe { p.as_ref() });
    |                                   ^
 
-error: this public function dereferences a raw pointer but is not marked `unsafe`
+error: this public function might dereference a raw pointer but is not marked `unsafe`
   --> $DIR/functions.rs:89:33
    |
 LL |         unsafe { std::ptr::read(p) };