From: Alessandro Ghedini <alessandro@ghedini.me>
Date: Fri, 2 Oct 2015 13:16:08 +0000 (+0200)
Subject: Do not treat 0 return value from BIO_get_fd() as error
X-Git-Tag: OpenSSL_1_1_0-pre1~394
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4428c7dba8f6f407d915c1226f4e0f673e8be241;p=openssl

Do not treat 0 return value from BIO_get_fd() as error

0 is a valid file descriptor.

RT#4068

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
---

diff --git a/apps/ocsp.c b/apps/ocsp.c
index 2ef42789e6..c599ffbd4f 100644
--- a/apps/ocsp.c
+++ b/apps/ocsp.c
@@ -1202,7 +1202,7 @@ static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
         return NULL;
     }
 
-    if (BIO_get_fd(cbio, &fd) <= 0) {
+    if (BIO_get_fd(cbio, &fd) < 0) {
         BIO_puts(bio_err, "Can't get connection fd\n");
         goto err;
     }