mirror_zfs/cmd/raidz_test
Alejandro Colomar db7f1a91de
Use _Noreturn (C11; GNU89) properly
A function that returns with no value is a different thing from a
function that doesn't return at all.  Those are two orthogonal
concepts, commonly confused.

pthread_create(3) expects a pointer to a start routine that has a
very precise prototype:

    void *(*start_routine)(void *);

However, other thread functions, such as kernel ones, expect:

    void (*start_routine)(void *);

Providing a different one is incorrect, and has only been working
because the ABIs happen to produce a compatible function.

We should use '_Noreturn void', since it's the natural type, and
then provide a '_Noreturn void *' wrapper for pthread functions.

For consistency, replace most cases of __NORETURN or
__attribute__((noreturn)) by _Noreturn.  _Noreturn is understood
by -std=gnu89, so it should be safe to use everywhere.

Ref: https://github.com/openzfs/zfs/pull/13110#discussion_r808450136
Ref: https://software.codidact.com/posts/285972
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Closes #13120
2022-03-04 16:25:22 -08:00
..
.gitignore SIMD implementation of vdev_raidz generate and reconstruct routines 2016-06-21 09:27:26 -07:00
Makefile.am cppcheck: integrete cppcheck 2021-01-26 16:12:26 -08:00
raidz_bench.c Removed duplicated includes 2021-03-22 12:34:58 -07:00
raidz_test.c Use _Noreturn (C11; GNU89) properly 2022-03-04 16:25:22 -08:00
raidz_test.h raidz_test: silence unsigned >=0 warnings 2022-02-18 09:34:52 -08:00