Re: [posixtest-discuss] [LTP] Openposix: pthread create, testcase 1-6

[Mike F. <va...@ge...>]

On Monday 03 December 2007, Patrick Kirsch wrote:
> I have a question on testcase pthread_create/1-1.c :
> there is shared variable "int *ctrl =3D (int *) arg;" in function
> "hp_func" which should be protected through pthread_mutex or similar,
> right? As I understand this shared variable should always be protected?
> So is there a reason why there are no pthread synchronisation calls?
>
> As you can see in the suggested temporary patch below, is it possible to
> add volatile-statement to the shared variables?
>
> I'm asking, because sometimes this testcase fails on s390x.

perhaps look at the generated assembly code and see if gcc is incorrectly=20
optimizing away memory loads ?  adding volatile sounds like you're ignoring=
 a=20
deeper problem ...
=2Dmike