fix and optimize non-default-type mutex behavior

[musl] / src / thread / pthread_mutex_init.c

diff --git a/src/thread/pthread_mutex_init.c b/src/thread/pthread_mutex_init.c
index d453543..6e23df1 100644 (file)
--- a/src/thread/pthread_mutex_init.c
+++ b/src/thread/pthread_mutex_init.c
@@ -3,7 +3,6 @@
 int pthread_mutex_init(pthread_mutex_t *m, const pthread_mutexattr_t *a)
 {
        memset(m, 0, sizeof *m);
-       if (a) {
-       }
+       if (a) m->_m_type = *a & 3;
        return 0;
 }