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Diffstat (limited to '')
| -rw-r--r-- | src/tools/clippy/src/docs/size_of_in_element_count.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/size_of_in_element_count.txt b/src/tools/clippy/src/docs/size_of_in_element_count.txt new file mode 100644 index 000000000..d893ec6a2 --- /dev/null +++ b/src/tools/clippy/src/docs/size_of_in_element_count.txt @@ -0,0 +1,16 @@ +### What it does +Detects expressions where +`size_of::<T>` or `size_of_val::<T>` is used as a +count of elements of type `T` + +### Why is this bad? +These functions expect a count +of `T` and not a number of bytes + +### Example +``` +const SIZE: usize = 128; +let x = [2u8; SIZE]; +let mut y = [2u8; SIZE]; +unsafe { copy_nonoverlapping(x.as_ptr(), y.as_mut_ptr(), size_of::<u8>() * SIZE) }; +```
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