[PATCH] virthread: Make sure virOnce() returns -1 on error

[Ján Tomko]

On a Tuesday in 2021, Michal Privoznik wrote:
>Since its introduction in v0.9.1~65 the virOnce() was expected to
>follow the usual retval logic (0 for success, a negative number
>for failure). However, that was never the case.
>
>On the other hand, looking into glibc and musl the pthread_once()
>never returns anything other than zero (uclibc-ng seems to not
>implement pthread_once()), therefore we never really hit any
>problem. But for code cleanliness (and to match POSIX
>documentation), let's change to code so that our retval logic is
>honoured.
>
>Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
>---
> src/util/virthread.c | 10 +++++++++-
> 1 file changed, 9 insertions(+), 1 deletion(-)
>

Reviewed-by: Ján Tomko <jtomko at redhat.com>

Jano
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