From: Richard M. Stallman <rms@gnu.org>
Date: Sat, 18 Sep 2004 19:18:58 +0000 (+0000)
Subject: Comment change.
X-Git-Tag: ttn-vms-21-2-B4~4888
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=1b8950e5313f348867100abb4fe47d5a66649ba4;p=emacs.git

Comment change.
---

diff --git a/src/alloc.c b/src/alloc.c
index bf93e7fb7bf..a0722b42cf4 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -186,8 +186,11 @@ Lisp_Object Vmemory_full;
 
 #ifndef HAVE_SHM
 
-/* Force it into data space!  Initialize it to a nonzero value;
-   otherwise some compilers put it into BSS.  */
+/* Initialize it to a nonzero value to force it into data space
+   (rather than bss space).  That way unexec will remap it into text
+   space (pure), on some systems.  We have not implemented the
+   remapping on more recent systems because this is less important
+   nowadays than in the days of small memories and timesharing.  */
 
 EMACS_INT pure[PURESIZE / sizeof (EMACS_INT)] = {1,};
 #define PUREBEG (char *) pure