1 files changed, 1 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 230b3b614d7..6ef6af1e3a1 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4750,7 +4750,7 @@ valid_pointer_p (void *p)
      Unfortunately, we cannot use NULL_DEVICE here, as emacs_write may
      not validate p in that case.  */
 
-  if (pipe (fd) == 0)
+  if (pipe2 (fd, O_CLOEXEC) == 0)
     {
       bool valid = emacs_write (fd[1], (char *) p, 16) == 16;
       emacs_close (fd[1]);