how can i solve gdb problem "unable to find Mach task port for process-id 2037: (os/kern) failure (0x5). (please check gdb is codesigned - see taskgated(8))

Where did you get your copy of GDB from? The standard Apple tools use LLDB, and have for a number of years. Getting GDB to work on modern Apple OS releases is going to be tricky. I strongly recommend that you use LLDB instead.

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