4 files changed, 4 insertions, 1 deletions
diff --git a/lib/libc/sys/ftruncate.c b/lib/libc/sys/ftruncate.c
index 211824ef4c9..b1054bc19f6 100644
--- a/lib/libc/sys/ftruncate.c
+++ b/lib/libc/sys/ftruncate.c
@@ -53,6 +53,7 @@ ftruncate(fd, length)
 	int	fd;
 	off_t	length;
 {
+	quad_t __syscall __P((quad_t, ...));
 
 	return(__syscall((quad_t)SYS_ftruncate, fd, 0, length));
 }
diff --git a/lib/libc/sys/lseek.c b/lib/libc/sys/lseek.c
index adc75f29b2f..10363bed96b 100644
--- a/lib/libc/sys/lseek.c
+++ b/lib/libc/sys/lseek.c
@@ -54,7 +54,7 @@ lseek(fd, offset, whence)
 	off_t	offset;
 	int	whence;
 {
-	extern off_t __syscall();
+	extern quad_t __syscall();
 
 	return(__syscall((quad_t)SYS_lseek, fd, 0, offset, whence));
 }
diff --git a/lib/libc/sys/mmap.c b/lib/libc/sys/mmap.c
index 442f3b1699b..b8ca3788ce9 100644
--- a/lib/libc/sys/mmap.c
+++ b/lib/libc/sys/mmap.c
@@ -58,6 +58,7 @@ mmap(addr, len, prot, flags, fd, offset)
 	int	fd;
 	off_t	offset;
 {
+	quad_t __syscall __P((quad_t, ...));
 
 	return((caddr_t)(long)__syscall((quad_t)SYS_mmap, addr, len, prot,
 	    flags, fd, 0, offset));
diff --git a/lib/libc/sys/truncate.c b/lib/libc/sys/truncate.c
index c54c6ed98ce..e8b0d73212f 100644
--- a/lib/libc/sys/truncate.c
+++ b/lib/libc/sys/truncate.c
@@ -53,6 +53,7 @@ truncate(path, length)
 	const char *path;
 	off_t length;
 {
+	quad_t __syscall __P((quad_t, ...));
 
 	return(__syscall((quad_t)SYS_truncate, path, 0, length));
 }