From: Érico Rolim <ericonr@disroot.org> the omission of the flag here seems to have been an oversight when the function was added in 8fb28b0b3e7a5e958fb844722a4b2ef9bc244af1 --- I was asked to send this part of my pthread_getname_np patch separately. src/thread/pthread_setname_np.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/thread/pthread_setname_np.c b/src/thread/pthread_setname_np.c index 82d35e17..fc2d2306 100644 --- a/src/thread/pthread_setname_np.c +++ b/src/thread/pthread_setname_np.c @@ -19,7 +19,7 @@ int pthread_setname_np(pthread_t thread, const char *name) snprintf(f, sizeof f, "/proc/self/task/%d/comm", thread->tid); pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs); - if ((fd = open(f, O_WRONLY)) < 0 || write(fd, name, len) < 0) status = errno; + if ((fd = open(f, O_WRONLY|O_CLOEXEC)) < 0 || write(fd, name, len) < 0) status = errno; if (fd >= 0) close(fd); pthread_setcancelstate(cs, 0); return status; -- 2.29.2