bors 7bfd9529be Auto merge of #119220 - Urgau:uplift-invalid_null_ptr_usage, r=fee1-dead ... Uplift `clippy::invalid_null_ptr_usage` lint as `invalid_null_arguments` This PR aims at uplifting the `clippy::invalid_null_ptr_usage` lint into rustc, this is similar to the [`clippy::invalid_utf8_in_unchecked` uplift](https://github.com/rust-lang/rust/pull/111543) a few months ago, in the sense that those two lints lint on invalid parameter(s), here a null pointer where it is unexpected and UB to pass one. *For context: GitHub Search reveals that just for `slice::from_raw_parts{_mut}` [~20 invalid usages](hhttps://github.com/search?q=lang%3Arust+%2Fslice%3A%3Afrom_raw_parts%28_mut%29%3F%5C%28ptr%3A%3Anull%2F+NOT+path%3A%2F%5Eclippy_lints%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Erust%5C%2Fsrc%5C%2Ftools%5C%2Fclippy%5C%2Fclippy_lints%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Esrc%5C%2Ftools%5C%2Fclippy%5C%2Fclippy_lints%5C%2Fsrc%5C%2F%2F&type=code) with `ptr::null` and an additional [4 invalid usages](https://github.com/search?q=lang%3Arust+%2Fslice%3A%3Afrom_raw_parts%5C%280%28%5C%29%7C+as%29%2F+NOT+path%3A%2F%5Eclippy_lints%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Erust%5C%2Fsrc%5C%2Ftools%5C%2Fclippy%5C%2Fclippy_lints%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Esrc%5C%2Ftools%5C%2Fclippy%5C%2Fclippy_lints%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Eutils%5C%2Ftinystr%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Eutils%5C%2Fzerovec%5C%2Fsrc%5C%2F%2F+NOT+path%3A%2F%5Eprovider%5C%2Fcore%5C%2Fsrc%5C%2F%2F&type=code) with `0 as *const ...`-ish casts.* ----- ## `invalid_null_arguments` (deny-by-default) The `invalid_null_arguments` lint checks for invalid usage of null pointers. ### Example ```rust // Undefined behavior unsafe { std::slice::from_raw_parts(ptr::null(), 1); } ``` Produces: ``` error: calling this function with a null pointer is Undefined Behavior, even if the result of the function is unused --> $DIR/invalid_null_args.rs:21:23 | LL | let _: &[usize] = std::slice::from_raw_parts(ptr::null_mut(), 0); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^---------------^^^^ | | | null pointer originates from here | = help: for more information, visit <https://doc.rust-lang.org/std/ptr/index.html> and <https://doc.rust-lang.org/reference/behavior-considered-undefined.html> ``` ### Explanation Calling methods whose safety invariants requires non-null pointer with a null pointer is undefined behavior. ----- The lint use a list of functions to know which functions and arguments to checks, this could be improved in the future with a rustc attribute, or maybe even with a `#[diagnostic]` attribute. This PR also includes some small refactoring to avoid some ambiguities in naming, those can be done in another PR is desired. `@rustbot` label: +I-lang-nominated r? compiler		2025-03-31 04:17:14 +00:00
..
assembly	Auto merge of #138503 - bjorn3:string_merging, r=tmiasko	2025-03-28 10:18:32 +00:00
auxiliary	tests: use minicore more	2025-02-24 09:26:54 +00:00
codegen	Auto merge of #138503 - bjorn3:string_merging, r=tmiasko	2025-03-28 10:18:32 +00:00
codegen-units	Remove -Zinline-in-all-cgus and clean up CGU partitioning tests	2025-01-27 23:48:47 -05:00
coverage	coverage: Add some more cases to tests/coverage/holes.rs	2025-02-19 13:56:20 +11:00
coverage-run-rustdoc	Update coverage-run-rustdoc output	2025-03-28 10:35:53 +01:00
crashes	Auto merge of #138719 - lcnr:concrete_opaque_types-closures, r=oli-obk	2025-03-22 06:55:52 +00:00
debuginfo	Rollup merge of #137967 - mustartt:fix-aix-test-hangs, r=workingjubilee	2025-03-11 13:30:50 +01:00
incremental	Remove attribute #[rustc_error]	2025-03-30 01:32:21 +03:00
mir-opt	Rollup merge of #138135 - scottmcm:chaining-ord, r=Mark-Simulacrum	2025-03-23 20:44:09 -04:00
pretty	Improve hir_pretty for struct expressions.	2025-03-30 11:21:51 +02:00
run-make	Rollup merge of #138104 - GuillaumeGomez:simplify-doctest-parsing, r=fmease	2025-03-28 12:59:55 +01:00
rustdoc	Correctly handle line comments in attributes and generate extern crates	2025-03-27 11:18:43 +01:00
rustdoc-gui	Rollup merge of #137539 - GuillaumeGomez:copy-content-tests, r=notriddle	2025-02-25 13:07:34 +01:00
rustdoc-js
rustdoc-js-std	Remove the common prelude module	2025-02-11 13:04:27 -08:00
rustdoc-json	rustdoc: Use own logic to print #[repr(..)] attributes in JSON output.	2025-03-22 18:47:12 +00:00
rustdoc-ui	Rollup merge of #138104 - GuillaumeGomez:simplify-doctest-parsing, r=fmease	2025-03-28 12:59:55 +01:00
ui	Auto merge of #119220 - Urgau:uplift-invalid_null_ptr_usage, r=fee1-dead	2025-03-31 04:17:14 +00:00
ui-fulldeps	Rollup merge of #138964 - compiler-errors:usage-of-interner, r=lcnr	2025-03-27 15:57:24 +11:00
COMPILER_TESTS.md