fix dup3 ignoring all flags but O_CLOEXEC on archs with SYS_dup2 syscall

[musl] / src / thread / sem_open.c

diff --git a/src/thread/sem_open.c b/src/thread/sem_open.c
index 6fb0c5b..0ad29de 100644 (file)
--- a/src/thread/sem_open.c
+++ b/src/thread/sem_open.c
@@ -12,6 +12,12 @@
 #include <stdlib.h>
 #include <pthread.h>
 #include "lock.h"
+#include "fork_impl.h"
+
+#define malloc __libc_malloc
+#define calloc __libc_calloc
+#define realloc undef
+#define free undef
 
 static struct {
        ino_t ino;
@@ -19,6 +25,7 @@ static struct {
        int refcnt;
 } *semtab;
 static volatile int lock[1];
+volatile int *const __sem_open_lockptr = lock;
 
 #define FLAGS (O_RDWR|O_NOFOLLOW|O_CLOEXEC|O_NONBLOCK)