From: Rich Salz <rsalz@openssl.org>
Date: Mon, 6 Feb 2017 19:22:29 +0000 (-0500)
Subject: If BIO_snprintf failed, keep trying.
X-Git-Tag: OpenSSL_1_0_2l~101
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=89ec60912c649417ce2288be005bee0c66122803;p=openssl

If BIO_snprintf failed, keep trying.

Thanks to Graeme Perrow for reporting and providing a possible fix.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2565)
---

diff --git a/crypto/bio/bio_cb.c b/crypto/bio/bio_cb.c
index d3e860686c..f96294bb43 100644
--- a/crypto/bio/bio_cb.c
+++ b/crypto/bio/bio_cb.c
@@ -78,6 +78,9 @@ long MS_CALLBACK BIO_debug_callback(BIO *bio, int cmd, const char *argp,
 
     len = BIO_snprintf(buf,sizeof buf,"BIO[%p]: ",(void *)bio);
 
+    /* Ignore errors and continue printing the other information. */
+    if (len < 0)
+        len = 0;
     p = buf + len;
     p_maxlen = sizeof(buf) - len;