From cf6ae0de6a71ad75bcc8c72416529cab24134890 Mon Sep 17 00:00:00 2001
From: KOBAYASHI Shuji <shuujii@gmail.com>
Date: Sun, 8 Dec 2019 18:31:41 +0900
Subject: Fix the error message of `Kernel#Float`

#### Before this patch:

  ```
  $ bin/mruby -e 'Float("1_a")'
  -e:1: invalid string for float(a) (ArgumentError)
  ```

#### After this patch:

  ```
  $ bin/mruby -e 'Float("1_a")'
  -e:1: invalid string for float("1_a") (ArgumentError)
  ```
---
 src/string.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/string.c')

diff --git a/src/string.c b/src/string.c
index dcf338eab..61fbd4ded 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2492,8 +2492,9 @@ mrb_str_to_i(mrb_state *mrb, mrb_value self)
 
 #ifndef MRB_WITHOUT_FLOAT
 MRB_API double
-mrb_cstr_to_dbl(mrb_state *mrb, const char * p, mrb_bool badcheck)
+mrb_cstr_to_dbl(mrb_state *mrb, const char * s, mrb_bool badcheck)
 {
+  const char *p = s;
   char *end;
   char buf[DBL_DIG * 4 + 10];
   double d;
@@ -2508,7 +2509,7 @@ mrb_cstr_to_dbl(mrb_state *mrb, const char * p, mrb_bool badcheck)
   if (p == end) {
     if (badcheck) {
 bad:
-      mrb_raisef(mrb, E_ARGUMENT_ERROR, "invalid string for float(%s)", p);
+      mrb_raisef(mrb, E_ARGUMENT_ERROR, "invalid string for float(%!s)", s);
       /* not reached */
     }
     return d;
-- 
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