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Except the C++ “Core dumped” line is telling you it just wrote a file out with the full state of the program at the time of the crash, you can load it up and see where it crashed and then go and look at what every local variable was at the time of the crash.
Pretty sure you can even step backwards in time with a good debugger to find out exactly how you got to the state you’re currently in.
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imagine if it, like, told you this so you didn’t have to find out about it via a post on lemmy
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tl;dw: writes to the path in /proc/sys/kernel/core_pattern
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If you are using systemd, there’s a tool called coredumpctl.
