From a34b206ed64f0a42e29fe72d10b1d64f512e3375 Mon Sep 17 00:00:00 2001
From: Felix Raimundo <felix.raimundo@numworks.com>
Date: Thu, 14 Apr 2016 12:04:02 +0200
Subject: [PATCH] Reduce the size of the flex buffer.

Change-Id: If7822053a23949ce4cf0d35b7d1b3f5aec7585eb
---
 poincare/src/expression_lexer.l | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/poincare/src/expression_lexer.l b/poincare/src/expression_lexer.l
index 26a2dffdc..7c9f8b10b 100644
--- a/poincare/src/expression_lexer.l
+++ b/poincare/src/expression_lexer.l
@@ -34,6 +34,15 @@ class Expression;
  * We don't want that feature : we don't even have printf ! */
 #define ECHO
 
+/* This defines the size of the flex buffer size.
+ * By default this buffer is of 16k, but we don't have the luxury to use so much
+ * memory on a microcontroller.
+ * The choice of 256 Bytes is the size of the input buffer given to flex in the
+ * current implementation (the app takes a maximum of 256).
+ */
+#undef YY_BUF_SIZE
+#define YY_BUF_SIZE 256
+
 #define fprintf(...) ((void)0)
 #define exit(...) abort()