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Re: Segfault downloading two files with "-O -J"

From: Daniel Stenberg <>
Date: Mon, 22 Aug 2011 16:29:31 +0200 (CEST)

On Mon, 22 Aug 2011, Yang Tse wrote:

>> At times HEADERFUNCTION+HEADERDATA was set only to have only
>> HEADERDATA set in the subsequent loop which could cause a NULL
>> to get sent as userdata to 'header_callback' which wasn't made
>> to handle that.
>> Now HEADERFUNCTION is explicitly set to NULL if it isn't set to the
>> callback.
> Shouldn't this take in account that there might exist cached data due to
> write being paused, or no longer paused but still with cached data, when the
> header write callback is reset on the fly, and somehow deal with it?

No. This setting of the HEADERFUNCTION option is only done between calls to
curl_easy_perform() so there will be nothing in particular cached that would
be ruined because of this.

(I realize this thread should've been on the curl-users list from the
beginning but since I didn't notice early enough I've just kept it here.)

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Received on 2011-08-22