From a4243360a2f8248dbf23b46ca14a7a59c0479b32 Mon Sep 17 00:00:00 2001
From: KOBAYASHI Shuji <shuujii@gmail.com>
Date: Sat, 3 Aug 2019 11:54:45 +0900
Subject: Fix `mrb_vformat("%f")` with `MRB_USE_FLOAT`

It potentially not work when `mrb_float` is `float` because `float` variable
in variable length arguments is promoted to `double`.

Also I fixed build with `MRB_WITHOUT_FLOAT`.
---
 src/error.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/error.c')

diff --git a/src/error.c b/src/error.c
index 6e7c3763a..3ee137c95 100644
--- a/src/error.c
+++ b/src/error.c
@@ -328,9 +328,11 @@ mrb_vformat(mrb_state *mrb, const char *format, va_list ap)
           i = *p == 'd' ? (mrb_int)va_arg(ap, int) : va_arg(ap, mrb_int);
           obj = mrb_fixnum_value(i);
           goto L_cat_obj;
+#ifndef MRB_WITHOUT_FLOAT
         case 'f':
-          obj = mrb_float_value(mrb, va_arg(ap, mrb_float));
+          obj = mrb_float_value(mrb, (mrb_float)va_arg(ap, double));
           goto L_cat_obj;
+#endif
         case 'l':
           chars = va_arg(ap, char*);
           len = va_arg(ap, mrb_int);
-- 
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