From 03f36f865582aea1d6dd99fd54b151b89341b273 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Mon, 27 Jul 2015 16:07:46 -0400
Subject: [PATCH] Placed guards on <alloca.> include

---
 stdcpp.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/stdcpp.h b/stdcpp.h
index bede8d8d..32688cef 100644
--- a/stdcpp.h
+++ b/stdcpp.h
@@ -49,10 +49,13 @@
 // #include <malloc.h>
 // #endif
 
-// Rijdael uses alloca. Just include it for everyone....
-#include <alloca.h>
+// Nearly everyone gets alloca from <alloca.h>.
+#ifndef CRYPTOPP_UNIX_AVAILABLE
+# include <alloca.h>
+#endif
 
-#if defined(__MINGW32__) || defined(__BORLANDC__)
+// Windows includes alloca in <malloc.h>.
+#if defined(CRYPTOPP_UNIX_AVAILABLE) || defined(__MINGW32__) || defined(__BORLANDC__)
 # include <malloc.h>
 #endif