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(1) What’s your basis for claiming “A kernel needs to core dump.”? (2) You ask, “Can you have a unix program that produces no exit value?” What does that have to do with this question? If you want to dispute stevea’s answer, post a comment under that answer. But note that the accepted answer says “you don't run the kernel like you run a program.” (3) What’s your basis for claiming that a program that produces no exit value is not (implicitly, cannot be) ‘‘a UNIX program’’?G-Man Says 'Reinstate Monica'– G-Man Says 'Reinstate Monica'2024-12-21 01:44:10 +00:00Commented Dec 21, 2024 at 1:44
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P.S. Please capitalize consistently.G-Man Says 'Reinstate Monica'– G-Man Says 'Reinstate Monica'2024-12-21 01:44:12 +00:00Commented Dec 21, 2024 at 1:44
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A core dump is a binary image of an executing process at the time some unhandled event (exception or signal) occurred. Useful for debugging IF the app was compiled with debug info (big & bloaty) - which is rarely the case. W/o using compilation debug option, the info value is quite limited. More modern programming languages are memory safe and use library methods that avoid most causes of a core dump. Core-dump certainly isn't required, and is not very prominent as a debugging tool.stevea– stevea2024-12-23 04:51:43 +00:00Commented Dec 23, 2024 at 4:51
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To avoid confusion, a coredump can help debug a user-space app. When a kernel detects an internal kernel fault it (tries to) dump registers and a "stack trace" of the kernel thread to the logs.stevea– stevea2024-12-23 04:57:11 +00:00Commented Dec 23, 2024 at 4:57
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I guess the missing principle is that if your machine has a dollar value then there are probably other people expecting you to be able to (minimally) trap a bug on the system they are relying on, see? [Assurance]Dru– Dru2024-12-24 21:55:19 +00:00Commented Dec 24, 2024 at 21:55
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