From b74205d022cb4b3e2e3ca8b43bce23aff885dac5 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 8 Oct 2014 13:53:41 +0200
Subject: FormAdd: precaution against memdup() of NULL pointer

Coverity CID 252518. This function is in general far too complicated for
its own good and really should be broken down into several smaller
funcitons instead - but I'm adding this protection here now since it
seems there's a risk the code flow can end up here and dereference a
NULL pointer.
---
 lib/formdata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/formdata.c')

diff --git a/lib/formdata.c b/lib/formdata.c
index 2e76994a1..a5ee54602 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -689,7 +689,7 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
         }
         if(!(form->flags & (HTTPPOST_FILENAME | HTTPPOST_READFILE |
                             HTTPPOST_PTRCONTENTS | HTTPPOST_PTRBUFFER |
-                            HTTPPOST_CALLBACK)) ) {
+                            HTTPPOST_CALLBACK)) && form->value) {
           /* copy value (without strdup; possibly contains null characters) */
           form->value = memdup(form->value, form->contentslength);
           if(!form->value) {
-- 
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