From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 25 Dec 2020 22:59:31 +0000 (+0100)
Subject: writeout: fix NULL dereference for "this url"
X-Git-Tag: curl-7_75_0~178
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44a504e5e49dbfab6b3795471bef2cb337d3de49;p=thirdparty%2Fcurl.git

writeout: fix NULL dereference for "this url"

Detected by torture test 1029

Follow-up to 7a90ddf88f5a

Closes #6374
---

diff --git a/src/tool_writeout.c b/src/tool_writeout.c
index 8b465db2d3..9ce0a997e5 100644
--- a/src/tool_writeout.c
+++ b/src/tool_writeout.c
@@ -141,7 +141,8 @@ void ourWriteOut(CURL *curl, struct per_transfer *per, const char *writeinfo,
                       curl_easy_strerror(result), stream);
                 break;
               case VAR_INPUT_URL:
-                fputs(per->this_url, stream);
+                if(per->this_url)
+                  fputs(per->this_url, stream);
                 break;
               case VAR_URLNUM:
                 fprintf(stream, "%u", per->urlnum);