https://bugs.kde.org/show_bug.cgi?id=451327
--- Comment #2 from Paul Floyd <pjfl...@wanadoo.fr> ---
Answering my own question. On Linux, if I add pthread_join:
static void
use_stack_allocated_semaphore(void)
{
sem_t sem;
sem_init(&sem, 0, 0);
pthread_t t;
pthread_create(&t, NULL, post_thread, &sem);
sem_wait(&sem);
sem_destroy(&sem);
pthread_join(t, NULL);
}
then I get no error
==17867== Helgrind, a thread error detector
==17867== Copyright (C) 2007-2017, and GNU GPL'd, by OpenWorks LLP et al.
==17867== Using Valgrind-3.20.0.GIT and LibVEX; rerun with -h for copyright
info
==17867== Command: ./451327
==17867==
==17867==
==17867== Use --history-level=approx or =none to gain increased speed, at
==17867== the cost of reduced accuracy of conflicting-access information
==17867== For lists of detected and suppressed errors, rerun with: -s
==17867== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
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