From 19c744e14d63996dd5e64db3f8a4440099079ac3 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby-lang.org>
Date: Mon, 14 Dec 2015 10:39:39 +0900
Subject: mrb_str_len_to_inum(): fixed a bug with separating _ in the digits;
 ref #3043

---
 src/string.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/string.c b/src/string.c
index 79606f1af..552293a46 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2125,15 +2125,21 @@ mrb_str_len_to_inum(mrb_state *mrb, const char *str, size_t len, int base, int b
       break;
   } /* end of switch (base) { */
   if (*p == '0') {    /* squeeze preceding 0s */
-    while (p<pend && ((c = *++p) == '0' || c == '_')) {
+    p++;
+    while (p<pend) {
+      c = *p++;
       if (c == '_') {
-        if (*p == '_') {
+        if (p<pend && *p == '_') {
           if (badcheck) goto bad;
           break;
         }
+        continue;
+      }
+      if (c != '0') {
+        p--;
+        break;
       }
     }
-    if (!(c = *p) || ISSPACE(c)) --p;
   }
   c = *p;
   if (badcheck && c == '\0') {
-- 
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