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-rw-r--r--src/lib9/lock-pthread.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/lib9/lock-pthread.c b/src/lib9/lock-pthread.c
index 689261f6..eb3ea21d 100644
--- a/src/lib9/lock-pthread.c
+++ b/src/lib9/lock-pthread.c
@@ -2,6 +2,7 @@
#include <unistd.h>
#include <sys/time.h>
#include <sched.h>
+#include <errno.h>
#include <libc.h>
static pthread_mutex_t initmutex = PTHREAD_MUTEX_INITIALIZER;