diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/cmp_null.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/cmp_null.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/cmp_null.rs b/src/tools/clippy/tests/ui/cmp_null.rs new file mode 100644 index 000000000..2d2d04178 --- /dev/null +++ b/src/tools/clippy/tests/ui/cmp_null.rs @@ -0,0 +1,17 @@ +#![warn(clippy::cmp_null)] +#![allow(unused_mut)] + +use std::ptr; + +fn main() { + let x = 0; + let p: *const usize = &x; + if p == ptr::null() { + println!("This is surprising!"); + } + let mut y = 0; + let mut m: *mut usize = &mut y; + if m == ptr::null_mut() { + println!("This is surprising, too!"); + } +} |