On Fri, 17 Nov 2017, Eric Ridge via curl-library wrote:
I guess I'm wondering what might cause this? My app is single-threaded and my usage pattern is that I init curl once on startup (and set non-request-specific CURLOPTs at this time) and just re-use it throughout the lifetime of the app.
Really hard to tell. I can't recall any bugs fixed recently like that.
I did notice a little bug in my code where I was setting CURLOPT_ERRORBUFFER to an allocated char * that happened to get free'd later on, so that's no good, but I can't decide if that would cause this crash in libcurl.
Hm, well if libcurl would then get an error it would write to the CURLOPT_ERRORBUFFER area that is then freed and possibly reused for another purpose and that would be really bad, but your stack trace doesn't really look like it was a problem like that. Although we can't rule it out.
I haven't been able to re-produce this for the past few days (even with the above bug in my code still around), so it's kinda hard to figure out if I've fixed it or not. :)
Without more clues on how you trigger this crash, I'm not sure I can do much more right now. :-/
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