[fpc-devel] CaptureBacktrace

[Adriaan van Os]

It looks like the FPC RTL function CaptureBacktrace uses a system call if 
FPC_SYSTEM_HAS_CAPTUREBACKTRACE is true and a custom routine if it is false. The define 
FPC_SYSTEM_HAS_CAPTUREBACKTRACE seems to be true for Windows with Structured Exception Handling 
(FPC_USE_WIN64_SEH) where RtlCaptureStackBackTrace is called instead of the FPC built-in routine.

My question now is if there is a reason why FPC doesn't call backtrace (see man backtrace) on Linux 
and Unix (including MacOS) platforms ?

Another question is whether and how NSException.callStackReturnAddresses and 
NSException.callStackSymbols can be used here (on MacOS) ?

Regards,

Adriaan van Os