From e77ea4e5f2b823181020bb3a337509ba028b6dc4 Mon Sep 17 00:00:00 2001
From: Hiroyuki Matsuzaki <m_hiro@mms.co.jp>
Date: Thu, 2 Oct 2014 19:24:21 +0900
Subject: fixed. cygwin-gcc(ver4.8.3) warning in conv_digit()

---
 src/string.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/src/string.c b/src/string.c
index 63c0e4573..5eaed533a 100644
--- a/src/string.c
+++ b/src/string.c
@@ -1854,13 +1854,10 @@ mrb_cstr_to_inum(mrb_state *mrb, const char *str, int base, int badcheck)
   unsigned long n = 0;
   mrb_int val;
 
-#undef ISDIGIT
-#define ISDIGIT(c) ('0' <= (c) && (c) <= '9')
 #define conv_digit(c) \
-    (!ISASCII(c) ? -1 : \
-     isdigit(c) ? ((c) - '0') : \
-     islower(c) ? ((c) - 'a' + 10) : \
-     isupper(c) ? ((c) - 'A' + 10) : \
+    (ISDIGIT(c) ? ((c) - '0') : \
+     ISLOWER(c) ? ((c) - 'a' + 10) : \
+     ISUPPER(c) ? ((c) - 'A' + 10) : \
      -1)
 
   if (!str) {
-- 
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