--- a/ChangeLog	Tue Oct 29 22:01:44 2013 -0700
+++ b/ChangeLog	Thu Oct 31 09:44:44 2013 -0700
@@ -1,3 +1,13 @@
+2013-10-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+	obstack: pacify HP C
+	* lib/obstack.h (obstack_free) [!__GNUC__]: Rewrite to avoid
+	warning "conversion from pointer to smaller integer" from HP
+	C-ANSI-C - cc version B9007AA/B3910B A.06.26.  It's safe to assume
+	C89 or later nowadays, so cast to void instead of int.  Privately
+	reported by H.Merijn Brand.  Also, change header to match glibc's,
+	to make checking against glibc easier.
+
 2013-10-29  Jim Meyering  <meyering@fb.com>
 
 	maint.mk: prefer gpgv2 over gpgv

--- a/lib/obstack.h	Tue Oct 29 22:01:44 2013 -0700
+++ b/lib/obstack.h	Thu Oct 31 09:44:44 2013 -0700
@@ -1,20 +1,20 @@
 /* obstack.h - object stack macros
-   Copyright (C) 1988-1994, 1996-1999, 2003-2006, 2009-2013 Free Software
-   Foundation, Inc.
+   Copyright (C) 1988-2013 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 3 of the License, or
-   (at your option) any later version.
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
 
-   You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with this program; if not, see
+   <http://www.gnu.org/licenses/>.  */
 
 /* Summary:
 
@@ -501,9 +501,9 @@
 ( (h)->temp.tempint = (char *) (obj) - (char *) (h)->chunk,             \
   ((((h)->temp.tempint > 0                                              \
     && (h)->temp.tempint < (h)->chunk_limit - (char *) (h)->chunk))     \
-   ? (int) ((h)->next_free = (h)->object_base                           \
-            = (h)->temp.tempint + (char *) (h)->chunk)                  \
-   : (((__obstack_free) ((h), (h)->temp.tempint + (char *) (h)->chunk), 0), 0)))
+   ? (void) ((h)->next_free = (h)->object_base                          \
+             = (h)->temp.tempint + (char *) (h)->chunk)                 \
+   : (__obstack_free) (h, (h)->temp.tempint + (char *) (h)->chunk)))
 
 #endif /* not __GNUC__ */