src/test/ui/iterators/into-iter-on-arrays-lint.fixed

   1 // run-pass
   2 // run-rustfix
   3 // rustfix-only-machine-applicable
   4
   5 fn main() {
   6     let small = [1, 2];
   7     let big = [0u8; 33];
   8
   9     // Expressions that should trigger the lint
  10     small.iter();
  11     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  12     //~| WARNING this changes meaning
  13     [1, 2].iter();
  14     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  15     //~| WARNING this changes meaning
  16     big.iter();
  17     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  18     //~| WARNING this changes meaning
  19     [0u8; 33].iter();
  20     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  21     //~| WARNING this changes meaning
  22
  23     Box::new(small).iter();
  24     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  25     //~| WARNING this changes meaning
  26     Box::new([1, 2]).iter();
  27     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  28     //~| WARNING this changes meaning
  29     Box::new(big).iter();
  30     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  31     //~| WARNING this changes meaning
  32     Box::new([0u8; 33]).iter();
  33     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  34     //~| WARNING this changes meaning
  35
  36     Box::new(Box::new(small)).iter();
  37     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  38     //~| WARNING this changes meaning
  39     Box::new(Box::new([1, 2])).iter();
  40     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  41     //~| WARNING this changes meaning
  42     Box::new(Box::new(big)).iter();
  43     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  44     //~| WARNING this changes meaning
  45     Box::new(Box::new([0u8; 33])).iter();
  46     //~^ WARNING this method call resolves to `<&[T; N] as IntoIterator>::into_iter`
  47     //~| WARNING this changes meaning
  48
  49     // Expressions that should not
  50     (&[1, 2]).into_iter();
  51     (&small).into_iter();
  52     (&[0u8; 33]).into_iter();
  53     (&big).into_iter();
  54
  55     for _ in &[1, 2] {}
  56     (&small as &[_]).into_iter();
  57     small[..].into_iter();
  58     std::iter::IntoIterator::into_iter(&[1, 2]);
  59
  60     #[allow(array_into_iter)]
  61     [0, 1].into_iter();
  62 }