diff options
Diffstat (limited to 'ext/openssl/ossl_ssl.c')
| -rw-r--r-- | ext/openssl/ossl_ssl.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c index b30c2cbf07..f220379872 100644 --- a/ext/openssl/ossl_ssl.c +++ b/ext/openssl/ossl_ssl.c @@ -1533,7 +1533,13 @@ ossl_ssl_write_internal(VALUE self, VALUE str, VALUE opts) if (ssl) { for (;;){ - nwrite = SSL_write(ssl, RSTRING_PTR(str), RSTRING_LENINT(str)); + int num = RSTRING_LENINT(str); + + /* SSL_write(3ssl) manpage states num == 0 is undefined */ + if (num == 0) + goto end; + + nwrite = SSL_write(ssl, RSTRING_PTR(str), num); switch(ssl_get_error(ssl, nwrite)){ case SSL_ERROR_NONE: goto end; |