[PATCH 1/6] nptl: Fix tst-cancel7 and tst-cancelx7 race condition (BZ #14232)

[Florian Weimer]

* Adhemerval Zanella:

> On 11/06/2021 12:02, Florian Weimer wrote:
>> * Adhemerval Zanella via Libc-alpha:
>> 
>>> +static const char sem_name[] = "/tst-cancel7-sem";
>> 
>> I don't think this is valid, it will break with concurrent execution of
>> the test suite from different build trees.
>> 
>> Maybe you could use support_shared_allocate and sem_init with a
>> process-shared semaphore?
>
> Indeed I did not take this in consideration.  But support_shared_allocate is
> similar to the unnamed semaphore and the test will use a system() to spawn
> the test process. So support_shared_allocate does not really help here.

Hmm.  I guess you could use a mapped file created with create_temp_file,
and pass the name on the command line.

Thanks,
Florian