diff options
Diffstat (limited to 'src/tools/clippy/src/docs/invalid_null_ptr_usage.txt')
| -rw-r--r-- | src/tools/clippy/src/docs/invalid_null_ptr_usage.txt | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/invalid_null_ptr_usage.txt b/src/tools/clippy/src/docs/invalid_null_ptr_usage.txt new file mode 100644 index 000000000..6fb3fa3f8 --- /dev/null +++ b/src/tools/clippy/src/docs/invalid_null_ptr_usage.txt @@ -0,0 +1,16 @@ +### What it does +This lint checks for invalid usages of `ptr::null`. + +### Why is this bad? +This causes undefined behavior. + +### Example +``` +// Undefined behavior +unsafe { std::slice::from_raw_parts(ptr::null(), 0); } +``` + +Use instead: +``` +unsafe { std::slice::from_raw_parts(NonNull::dangling().as_ptr(), 0); } +```
\ No newline at end of file |