* util.c (ruby_strtod): reject Float('0x0.').

  [ruby-dev:42239] Bug #3820

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29239 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 2 insertions, 0 deletions

diff --git a/util.c b/util.c
index 40b4573660..94396a3991 100644
--- a/util.c
+++ b/util.c
@@ -2122,6 +2122,7 @@ break2:
 	    static const char hexdigit[] = "0123456789abcdef0123456789ABCDEF";
 	    s0 = ++s;
 	    adj = 0;
+	    aadj = -1;
 
 	    if (!*++s || !(s1 = strchr(hexdigit, *s))) goto ret0;
 	    do {
@@ -2159,6 +2160,7 @@ break2:
 		dval(rv) = ldexp(adj, nd * dsign);
 	    }
 	    else {
+		if (aadj != -1) goto ret0;
 		dval(rv) = adj;
 	    }
 	    goto ret;