On Mon, 12 Mar 2012, Steve Holme wrote:

> As Curl calls strdup() when setting string variables this should free
> the previous memory and then strdup() should fail and return a
> null pointer (thus setting it back to its original state) ;-)

My curiosity got the better of me so I took a look at curl_easy_setop(),
Curl_setopt() and eventually setstropt() in more detail to see what actually
happens and...

It does indeed call free (but it uses Curl_Safefree() so it will set the
variable to NULL) but for safety reasons I guess, it doesn't call strdup()
if the pointer you pass in is NULL so yes it does unset the option for you
;-)

Steve

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Received on 2012-03-12