Closed
Description
This might be a false positive, I had nightly defaulted by accident and ran across this warning. Stable 1.84 doesn't display this warning.
rustc --version
rustc 1.86.0-nightly (824759493 2025-01-09)
Compiling uu_sum v0.0.29 (/home/drebbe/dev/coreutils/src/uu/sum)
warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
--> src/uu/od/src/formatteriteminfo.rs:29:45
|
29 | (IntWriter(a), IntWriter(b)) => a == b,
| ^^^^^^
|
= note: the address of the same function can vary between different codegen units
= note: furthermore, different functions could have the same address after being merged together
= note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
= note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
|
29 | (IntWriter(a), IntWriter(b)) => std::ptr::fn_addr_eq(*a, *b),
| ++++++++++++++++++++++ ~~~ +
warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique
--> src/uu/od/src/formatteriteminfo.rs:30:49
|
30 | (FloatWriter(a), FloatWriter(b)) => a == b,
| ^^^^^^
|
= note: the address of the same function can vary between different codegen units
= note: furthermore, different functions could have the same address after being merged together
= note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html>
help: refactor your code, or use `std::ptr::fn_addr_eq` to suppress the lint
|
30 | (FloatWriter(a), FloatWriter(b)) => std::ptr::fn_addr_eq(*a, *b),
| ++++++++++++++++++++++ ~~~ +