wingo pushed a commit to branch master in repository guile. commit 3f23688f397722546861d04688c3eefb0c9c9149 Author: Andy Wingo <wi...@pobox.com> Date: Sun Nov 13 22:16:42 2016 +0100
Fix crasher in scm_system_async_mark_for_thread * libguile/async.c (scm_system_async_mark_for_thread): Only signal the cond if there is a wait mutex. --- libguile/async.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/libguile/async.c b/libguile/async.c index 174a87a..92ed2f4 100644 --- a/libguile/async.c +++ b/libguile/async.c @@ -148,9 +148,12 @@ SCM_DEFINE (scm_system_async_mark_for_thread, "system-async-mark", 1, 1, 0, sleep_mutex locked while setting t->sleep_mutex and will only unlock it again while waiting on sleep_cond. */ - scm_i_scm_pthread_mutex_lock (wake->mutex); - scm_i_pthread_cond_signal (&t->sleep_cond); - scm_i_pthread_mutex_unlock (wake->mutex); + if (wake->mutex) + { + scm_i_scm_pthread_mutex_lock (wake->mutex); + scm_i_pthread_cond_signal (&t->sleep_cond); + scm_i_pthread_mutex_unlock (wake->mutex); + } if (wake->fd >= 0) {