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On Mac OS X, if I send SIGQUIT to my C program, it terminates, but there is no core dump file.
Do you have to manually enable core dumps on Mac OS X (how?), or are they written to somewhere else instead of the working directory?
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By default, all core dumps are stored in /var/lib/systemd/coredump (due to Storage=external ) and they are compressed with zstd (due to Compress=yes ). Additionally, various size limits for the storage can be configured. Note: The default value for kernel.
In a terminal, run sleep 30 to start a process sleeping for 30 seconds. While it is running, press Ctrl + \ to force a core dump. You'll now see a core file in the directory you are in.
The CoreServices folder is located in the Macintosh HD > System > Library folder, and contains a number of applications, background tasks, and shared resources that the system uses to provide various services to the user.
It seems they are suppressed by default. Running
$ ulimit -c unlimited Will enable core dumps for the current terminal, and it will be placed in /cores as core.PID. When you open a new session, it will be set to the default value again.
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