From 472847adc24f10e30ef5ff09814cf12d6a3d372a Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Wed, 4 Jul 2012 17:12:47 +0900
Subject: input cast to unsigned char for unqualified tolower(); close #342

---
 src/codegen.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/codegen.c')

diff --git a/src/codegen.c b/src/codegen.c
index 2654fcbe3..8aef2a328 100644
--- a/src/codegen.c
+++ b/src/codegen.c
@@ -802,8 +802,9 @@ readint_float(codegen_scope *s, const char *p, int base)
   mrb_float f = 0;
   int n;
 
-  while (p <= e) {
-    char c = tolower(*p);
+  while (p < e) {
+    char c = *p;
+    c = tolower((unsigned char)c);
     for (n=0; n<base; n++) {
       if (mrb_digitmap[n] == c) {
 	f *= base;
-- 
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