curl / Mailing Lists / curl-library / Single Mail
Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself.

Re: libcurl 7.81.0 via homebrew on macOS clean up issues

From: Gavin Henry via curl-library <>
Date: Mon, 17 Jan 2022 22:20:14 +0000

> >
> Line 60 sets your write callback with CURLOPT_WRITEFUNCTION but you don't set
> CURLOPT_WRITEDATA for the handle, so your callback will get the default
> callback argument (a FILE * that is stdout).
> Then in the callback you seem to expect that 'userp' points to a json_t struct
> or something and from that point things will not be good.

Many thanks Daniel. I'll read the docs more around CURLOPT_WRITEDATA.

Kind Regards,
Gavin Henry.
Received on 2022-01-17