I have a program that consistently works in DrRacket regardless of input size. 

But on the command line, once input exceeds a certain threshold, the program 
consistently dies with a "Segmentation fault: 11 (core dumped)" error (though 
it works with smaller files). I'm invoking `racket` without any special flags, 
like so:

racket main.rkt

I know which line of my program is triggering the segfault. But since the error 
is related to the input size and the use of command-line Racket, I think I 
ought to look elsewhere for the cause.

Are there particular command-line flags that can be helpful in diagnosing 
segfaults? Is a segfault like this typically due to running out of memory?
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