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-rw-r--r--libc/sysdeps/linux/common/dup3.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/dup3.c b/libc/sysdeps/linux/common/dup3.c
index 539c0716c..8a5778577 100644
--- a/libc/sysdeps/linux/common/dup3.c
+++ b/libc/sysdeps/linux/common/dup3.c
@@ -10,4 +10,6 @@
#include <sys/syscall.h>
#include <unistd.h>
+#if defined(__NR_dup3)
_syscall3(int, dup3, int, oldfd, int, newfd, int, flags)
+#endif