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-rw-r--r--src/ipc/semctl.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/ipc/semctl.c b/src/ipc/semctl.c
index 49927e2e..3d79f503 100644
--- a/src/ipc/semctl.c
+++ b/src/ipc/semctl.c
@@ -3,7 +3,7 @@
#include "syscall.h"
#include "ipc.h"
-struct semun {
+union semun {
int val;
struct semid_ds *buf;
unsigned short *array;
@@ -11,10 +11,10 @@ struct semun {
int semctl(int id, int num, int cmd, ...)
{
- struct semun arg;
+ union semun arg;
va_list ap;
va_start(ap, cmd);
- arg = va_arg(ap, struct semun);
+ arg = va_arg(ap, union semun);
va_end(ap);
#ifdef SYS_semctl
return syscall(SYS_semctl, id, num, cmd | IPC_64, arg.buf);