From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 15 May 2006 03:17:08 +0000 (+0000)
Subject: (AC_HEADER_STDBOOL): Fix overly-picky
X-Git-Tag: v6.0~394
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=48138763f05fa312089223282f2a162117f2f8d9;p=thirdparty%2Fcoreutils.git

(AC_HEADER_STDBOOL): Fix overly-picky
test for C99 conformance; (bool) 0.5 is an integer constant
expression, but (bool) -0.5 is not.  Problem reported by Fedor
Sergeev in <http://forum.sun.com/jive/thread.jspa?threadID=96202>.
---

diff --git a/m4/ChangeLog b/m4/ChangeLog
index 6d584a076f..c984e9bb9f 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,10 @@
+2006-05-14  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* stdbool.m4 (AC_HEADER_STDBOOL): Fix overly-picky
+	test for C99 conformance; (bool) 0.5 is an integer constant
+	expression, but (bool) -0.5 is not.  Problem reported by Fedor
+	Sergeev in <http://forum.sun.com/jive/thread.jspa?threadID=96202>.
+
 2006-02-17  Eric Blake  <ebb9@byu.net>
 
 	Sync from gnulib.
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4
index 43fbe28154..2204ecd984 100644
--- a/m4/stdbool.m4
+++ b/m4/stdbool.m4
@@ -64,9 +64,9 @@ AC_DEFUN([AC_HEADER_STDBOOL],
 	  char a[true == 1 ? 1 : -1];
 	  char b[false == 0 ? 1 : -1];
 	  char c[__bool_true_false_are_defined == 1 ? 1 : -1];
-	  char d[(bool) -0.5 == true ? 1 : -1];
+	  char d[(bool) 0.5 == true ? 1 : -1];
 	  bool e = &s;
-	  char f[(_Bool) -0.0 == false ? 1 : -1];
+	  char f[(_Bool) 0.0 == false ? 1 : -1];
 	  char g[true];
 	  char h[sizeof (_Bool)];
 	  char i[sizeof s.t];