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Is there a limit on the size of file that can be edited with Epoch?

I am running Epoch 3.2.3 and it appears to have a file size limit of about
5 megabytes.  Files larger than that cause "Segmentation fault
epoch yaa (core dumped)" crashes when the auto-completion feature is used.
For example: I brought up epoch with the commmand epoch zaa.  I did an 
ESC x inse<SP> key sequence to try to auto-complete the insert-file
command.  It split the window and brought up a list of possible completions.
I inserted a file called zab and tried the sequence again.  It still worked
properly.  Each file was about 1.8 megabytes.  After the third file was
inserted an attempt to get auto-completion on the insert-file command, resulted
in the Segmentation fault message.

An attempt to visit a 21 megabyte file resulted in the Segmentation fault before
the load of the file was completed.

An attempt to visit a 38 megabyte file resulted in a Bus error (core dumped)
message.

Are there configuration options that can be set to change this upper limit?

Do newer versions have a different limit?
The 21 MB and 38 MB test also failed on my version 18.55.17 of GNU Emacs.

Is this limit documented anywhere?  Is it affected by the size of memory 
on the machine?

Can anyone shed any light this problem.

Thanks in advance,

Garry Schumacher
garry@garnet.arh.cdc.com