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Diffstat (limited to 'libc/sysdeps/linux/common/vhangup.c')
-rw-r--r--libc/sysdeps/linux/common/vhangup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/vhangup.c b/libc/sysdeps/linux/common/vhangup.c
index f6dc0865f..984a09dec 100644
--- a/libc/sysdeps/linux/common/vhangup.c
+++ b/libc/sysdeps/linux/common/vhangup.c
@@ -9,4 +9,6 @@
#include "syscalls.h"
#include <unistd.h>
+#if defined __USE_BSD || (defined __USE_XOPEN && !defined __USE_UNIX98)
_syscall0(int, vhangup);
+#endif