From 59756aef149dd70d74146526c70679c47cab0811 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 6 Jan 2020 22:25:05 +0900
Subject: Need to preserve the original input string in `mrb_str_len_to_dbl`.

---
 src/string.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index 7b6a11a6f..93e4847d0 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2492,16 +2492,15 @@ double
 mrb_str_len_to_dbl(mrb_state *mrb, const char *s, size_t len, mrb_bool badcheck)
 {
   char buf[DBL_DIG * 4 + 10];
-  const char *p;
-  const char *pend = s + len;
+  const char *p = s;
+  const char *pend = p + len;
   char *end;
   char *n;
   char prev = 0;
   double d;
 
-  if (!s) return 0.0;
-  while (ISSPACE(*s)) s++;
-  p = s;
+  if (!p) return 0.0;
+  while (ISSPACE(*p)) p++;
 
   if (p[0] == '0' && (p[1] == 'x' || p[1] == 'X')) {
     mrb_value x;
-- 
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