src/tools/clippy/tests/ui/unnecessary_safety_comment.rs

   1 #![warn(clippy::undocumented_unsafe_blocks, clippy::unnecessary_safety_comment)]
   2 #![allow(clippy::let_unit_value, clippy::missing_safety_doc)]
   3
   4 mod unsafe_items_invalid_comment {
   5     // SAFETY:
   6     const CONST: u32 = 0;
   7     // SAFETY:
   8     static STATIC: u32 = 0;
   9     // SAFETY:
  10     struct Struct;
  11     // SAFETY:
  12     enum Enum {}
  13     // SAFETY:
  14     mod module {}
  15 }
  16
  17 mod unnecessary_from_macro {
  18     trait T {}
  19
  20     macro_rules! no_safety_comment {
  21         ($t:ty) => {
  22             impl T for $t {}
  23         };
  24     }
  25
  26     // FIXME: This is not caught
  27     // Safety: unnecessary
  28     no_safety_comment!(());
  29
  30     macro_rules! with_safety_comment {
  31         ($t:ty) => {
  32             // Safety: unnecessary
  33             impl T for $t {}
  34         };
  35     }
  36
  37     with_safety_comment!(i32);
  38 }
  39
  40 fn unnecessary_on_stmt_and_expr() -> u32 {
  41     // SAFETY: unnecessary
  42     let num = 42;
  43
  44     // SAFETY: unnecessary
  45     if num > 24 {}
  46
  47     // SAFETY: unnecessary
  48     24
  49 }
  50
  51 fn main() {}