On Mon, 17 Jan 2022, Gavin Henry via curl-library wrote:
https://github.com/SentryPeer/SentryPeer/blob/main/tests/unit_tests/test_http_api.c#L94
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.
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