From 015ecc5018782c18fb20d0259c8a56cc258b9ab4 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Mon, 23 Jan 2012 00:10:55 -0800
Subject: [PATCH] doc: work around mingw-w64 alloca problem with example

* doc/autoconf.texi (Particular Functions): In example code for
alloca, do not re-#define alloca.  This works around a mingw-w64
problem reported by Vincent Torri in
<http://lists.gnu.org/archive/html/autoconf/2012-01/msg00018.html>.
---
 doc/autoconf.texi | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 247a46ca..82837a2b 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -4863,15 +4863,15 @@ like the following, to declare it properly.
 #endif
 #ifdef HAVE_ALLOCA_H
 # include <alloca.h>
-#elif defined __GNUC__
-# define alloca __builtin_alloca
-#elif defined _AIX
-# define alloca __alloca
-#elif defined _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#else
-# ifndef HAVE_ALLOCA
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
 #  ifdef  __cplusplus
 extern "C"
 #  endif
-- 
2.11.4.GIT