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Re: Crash in curl_multi_perform add_next_timeout

From: Gangadhar Hariharan via curl-library <>
Date: Wed, 18 Oct 2017 15:29:02 -0700

Hello Daniel,

Firstly congrats on the prestigious award! Kudos!:-)

The version of the libcurl: curl-7.47.1
Can you confirm that this crash could only occur if two threads are trying
to read/write at the multi-handler at the same time?


On Wed, Oct 18, 2017 at 2:41 PM, Daniel Stenberg <> wrote:

> On Tue, 17 Oct 2017, Gangadhar Hariharan via curl-library wrote:
> i observe crash in curl_multi_perform add_next_timeout
> What libcurl version on what platform?
> Something i am doing wrong here that the crash still happens?
> If only one thread at a time ever uses the same handle then I don't
> understand what the threads could do to it mess up.
> If you can reproduce the problem with a modern libcurl version with a
> stand-alone example, then I would be really interested in taking a look at
> it!
> --
> /
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Received on 2017-10-19