[r6rs-discuss] Tweak to the description of eqv? on constants

[Alan Watson]

The description of eqv? in section 11.5 says:

"Since the effect of trying to modify constant objects (those returned 
by literal expressions) is unspecified, implementations are permitted, 
though not required, to share structure between constants where 
appropriate."

However, section 5.10 says:

"An attempt to store a new value into a location referred to by an 
immutable object should raise an exception with condition type &assertion."

At first glance, then, section 5.10 does indeed specify the effect of 
trying to modify constant objects. Now, one could argue against this 
given the presence of "should". However, in the context of 11.5, the 
reason that implementations are permitted to share structure is 
irrelevant. Therefore, it might be best simply to remove the text "Since 
the effect of trying to modify constant objects (those returned by 
literal expressions) is unspecified" and leave:

"Implementations are permitted, though not required, to share structure 
between constants where appropriate".

Regards,

Alan