* transcode.c (allocate_converted_string): fix overflow condition.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19183 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/transcode.c b/transcode.c
index cc3fc53c7a..ccb54dfff0 100644
--- a/transcode.c
+++ b/transcode.c
@@ -1445,7 +1445,7 @@ allocate_converted_string(const char *sname, const char *dname,
     res = rb_econv_convert(ec, &sp, str+len, &dp, dst_str+dst_bufsize, 0);
     dst_len = dp - dst_str;
     while (res == econv_destination_buffer_full) {
-        if (dst_bufsize * 2 < dst_bufsize) {
+        if (SIZE_MAX/2 < dst_bufsize) {
             goto fail;
         }
         dst_bufsize *= 2;