From 1041a5d44471b8efef2751d8a962080729c88b5b Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Sun, 21 Mar 2010 14:53:34 +0100
Subject: [PATCH] maint.mk: prohibit inclusion of "intprops.h" without use

* top/maint.mk (sc_prohibit_intprops_without_use): New rule.
---
 ChangeLog    |  5 +++++
 top/maint.mk | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index a5acf2faa..92faf920e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-03-21  Jim Meyering  <meyering@redhat.com>
+
+	maint.mk: prohibit inclusion of "intprops.h" without use
+	* top/maint.mk (sc_prohibit_intprops_without_use): New rule.
+
 2010-03-21  Bruno Haible  <bruno@clisp.org>
 
 	New module 'grantpt'.
diff --git a/top/maint.mk b/top/maint.mk
index 7d84b6c3b..d2248d8fa 100644
--- a/top/maint.mk
+++ b/top/maint.mk
@@ -452,6 +452,19 @@ sc_prohibit_signal_without_use:
 	re='\<($(_sig_function_re)) *\(|\<($(_sig_syms_re))\>'		\
 	  $(_header_without_use)
 
+# Get the list of symbol names with this:
+# perl -lne '/^# *define (\w+)\(/ and print $1' lib/intprops.h|grep -v '^s'|fmt
+_intprops_names =							\
+  TYPE_IS_INTEGER TYPE_TWOS_COMPLEMENT TYPE_ONES_COMPLEMENT		\
+  TYPE_SIGNED_MAGNITUDE TYPE_SIGNED TYPE_MINIMUM TYPE_MAXIMUM		\
+  INT_STRLEN_BOUND INT_BUFSIZE_BOUND
+_intprops_syms_re = $(subst $(_sp),|,$(strip $(_intprops_names)))
+# Prohibit the inclusion of intprops.h without an actual use.
+sc_prohibit_intprops_without_use:
+	@h='"intprops.h"'						\
+	re='\<($(_intprops_syms_re)) *\('				\
+	  $(_header_without_use)
+
 sc_obsolete_symbols:
 	@re='\<(HAVE''_FCNTL_H|O''_NDELAY)\>'				\
 	msg='do not use HAVE''_FCNTL_H or O'_NDELAY			\
-- 
2.11.0