From 8130bbc4796db9eefca6dc4a80bc58f41e32427f Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Sat, 24 Feb 2024 23:03:15 +0900
Subject: [PATCH] string.c (mrb_str_len_to_dbl): should return zero for invalid
 string

We should not use uninitialized value; fix #6183
---
 src/string.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/string.c b/src/string.c
index ee9039770..4c93d2ab2 100644
--- a/src/string.c
+++ b/src/string.c
@@ -2734,7 +2734,7 @@ bad:
       mrb_raisef(mrb, E_ARGUMENT_ERROR, "invalid string for float(%!s)", s);
       /* not reached */
     }
-    return d;
+    return 0.0;
   }
   if (badcheck) {
     if (!end || p == end) goto bad;