[hurd,commited] hurd: Document dtable_cloexec size convention.

[Samuel Thibault]

        * sysdeps/mach/hurd/spawni.c (__spawni): Use orig_dtablesize instead
        of dtablesize for allocating dtable_cloexec.
---
 ChangeLog                  | 2 ++
 sysdeps/mach/hurd/spawni.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index ae5b4a136d..e6f42b41b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,6 +12,8 @@
        * hurd/Versions (_hurd_port_move): Export function.
        * sysdeps/mach/hurd/i386/libc.abilist (_hurd_port_move): Expect
        symbol.
+       * sysdeps/mach/hurd/spawni.c (__spawni): Use orig_dtablesize instead
+       of dtablesize for allocating dtable_cloexec.
 
 2018-11-09  Martin Sebor  <address@hidden>
 
diff --git a/sysdeps/mach/hurd/spawni.c b/sysdeps/mach/hurd/spawni.c
index c08f2a5b5a..b98e991d3b 100644
--- a/sysdeps/mach/hurd/spawni.c
+++ b/sysdeps/mach/hurd/spawni.c
@@ -405,7 +405,7 @@ __spawni (pid_t *pid, const char *file,
   dtable = __alloca (dtablesize * sizeof (dtable[0]));
   ulink_dtable = __alloca (dtablesize * sizeof (ulink_dtable[0]));
   dtable_cells = __alloca (dtablesize * sizeof (dtable_cells[0]));
-  dtable_cloexec = __alloca (dtablesize);
+  dtable_cloexec = __alloca (orig_dtablesize);
   for (i = 0; i < dtablesize; ++i)
     {
       struct hurd_fd *const d = _hurd_dtable[i];
-- 
2.19.1