---------- Forwarded message ---------- From: Panicz Maciej Godek <godek.mac...@gmail.com> Date: 2013/10/1 Subject: Re: Guile interpeter crash To: Dmitry Bogatov <kact...@gnu.org>
2013/10/1 Dmitry Bogatov <kact...@gnu.org> > > Here is code that results crash (return 134). Hope it is interesting. > The code you gave is not a proper Scheme program. C.f. http://www.schemers.org/Documents/Standards/R5RS/HTML/r5rs-Z-H-8.html#%_sec_5.3, excerpt: Although macros may expand into definitions and syntax definitions in any context that permits them, it is an error for a definition or syntax definition to shadow a syntactic keyword whose meaning is needed to determine whether some form in the group of forms that contains the shadowing definition is in fact a definition, or, for internal definitions, is needed to determine the boundary between the group and the expressions that follow the group In other words, you cannot redefine define. I suppose the interpreter falls into infinite loop when it tries to substitute define# with define, and then define -- with define#. That being said, I don't think it's fortunate to use the # character within a symbol. Best regards, M.
