diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/fn_null_check.rs')
| -rw-r--r-- | src/tools/clippy/tests/ui/fn_null_check.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/fn_null_check.rs b/src/tools/clippy/tests/ui/fn_null_check.rs new file mode 100644 index 000000000..df5bc8420 --- /dev/null +++ b/src/tools/clippy/tests/ui/fn_null_check.rs @@ -0,0 +1,21 @@ +#![allow(unused)] +#![warn(clippy::fn_null_check)] +#![allow(clippy::cmp_null)] +#![allow(clippy::ptr_eq)] +#![allow(clippy::zero_ptr)] + +pub const ZPTR: *const () = 0 as *const _; +pub const NOT_ZPTR: *const () = 1 as *const _; + +fn main() { + let fn_ptr = main; + + if (fn_ptr as *mut ()).is_null() {} + if (fn_ptr as *const u8).is_null() {} + if (fn_ptr as *const ()) == std::ptr::null() {} + if (fn_ptr as *const ()) == (0 as *const ()) {} + if (fn_ptr as *const ()) == ZPTR {} + + // no lint + if (fn_ptr as *const ()) == NOT_ZPTR {} +} |