Fix porting bug to older POSIXish platforms.

* sysdep.c (emacs_pipe): New function, that implements
pipe2 (fd, O_CLOEXEC) even on hosts that lack O_CLOEXEC.
This should port better to CentOS 5 and to Mac OS X 10.6.
All calls to pipe2 changed.

Fixes: debbugs:14862

1 files changed, 1 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index b71cdb98d78..b52e3de0494 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4741,7 +4741,7 @@ valid_pointer_p (void *p)
      Unfortunately, we cannot use NULL_DEVICE here, as emacs_write may
      not validate p in that case.  */
 
-  if (pipe2 (fd, O_CLOEXEC) == 0)
+  if (emacs_pipe (fd) == 0)
     {
       bool valid = emacs_write (fd[1], (char *) p, 16) == 16;
       emacs_close (fd[1]);