From a5a6b51126875e578ef1834c8af06141934df7dd Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 25 Mar 2019 21:06:54 +0900
Subject: Use uppercase version of `ctype` macros e.g. `ISSPACE`; fix #4338

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

(limited to 'src')

diff --git a/src/string.c b/src/string.c
index 19962fb30..8efea84ab 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2844,7 +2844,7 @@ mrb_float_read(const char *string, char **endPtr)
      */
 
     p = string;
-    while (isspace(*p)) {
+    while (ISSPACE(*p)) {
       p += 1;
     }
     if (*p == '-') {
@@ -2867,7 +2867,7 @@ mrb_float_read(const char *string, char **endPtr)
     for (mantSize = 0; ; mantSize += 1)
     {
       c = *p;
-      if (!isdigit(c)) {
+      if (!ISDIGIT(c)) {
         if ((c != '.') || (decPt >= 0)) {
           break;
         }
@@ -2952,7 +2952,7 @@ mrb_float_read(const char *string, char **endPtr)
         }
         expSign = FALSE;
       }
-      while (isdigit(*p)) {
+      while (ISDIGIT(*p)) {
         exp = exp * 10 + (*p - '0');
         if (exp > 19999) {
           exp = 19999;
-- 
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