Summary: A simple program gets a Segmentation Fault if the Library that it ::Requires is tokenised with rexxc.
The program is irrelevant; its code is "Say arg(1)". It contains the directive:
... If climate.rex is my rexx source, the program works. if climate.rex has been tokenised with rexxc then we get the Segmentation Fault.
I'm happy to share the source of climate.rex with the developers, but prefer not to attach it to this report.
Climate.rex in turn ::requires 'subroutines.rex' - a much larger library, also tokenised, which seems to cause no problem when used by itself. I'm happy to share this with the developers as well.