| Message ID | 20230415165904.791841-4-ammarfaizi2@gnuweeb.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | io_uring-udp fix, manpage fix, and hppa cross-compiler | expand |
diff --git a/man/io_uring_cqe_get_data.3 b/man/io_uring_cqe_get_data.3 index 4cbb32cd864e12c2..a4d2988a49d92aa8 100644 --- a/man/io_uring_cqe_get_data.3 +++ b/man/io_uring_cqe_get_data.3 @@ -46,7 +46,7 @@ or If the .I user_data value has been set before submitting the request, it will be returned. -Otherwise the functions returns NULL. +Otherwise, the return value is undefined. .SH SEE ALSO .BR io_uring_get_sqe (3), .BR io_uring_sqe_set_data (3),
Since commit 8ecd3fd959634df8 ("Don't clear sqe->user_data as part of command prep"), the prep functions no longer zero the user data. If the user_data is not set, it will contain whatever previous value in it. Therefore, the returned value when the user_data is-not-set is not always NULL. And oh, someone once hit an issue because they assume the return value is NULL if the user_data is not set. See the link below. Fix the manpage, tell that the return value will be undefined. Link: https://github.com/axboe/liburing/issues/575#issuecomment-1110516140 Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org> --- man/io_uring_cqe_get_data.3 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)