Re: bootstrap problem with union Lisp_Object

[Stefan Monnier]

>>> I'm still trying to track this down, but just for the record: If I
>>> build recent sources with CC='gcc -DENABLE_CHECKING - 
>>> DUSE_LISP_UNION_TYPE', bootstrapping fails:
>> 
>> Fixed...  With these options enabled, EQ evaluates its arguments  
>> twice.

> I think that should be fixed.  The requirement that arguments of EQ or
> NILP need to be side effect free is too easy to forget, since it is
> nowhere documented.

The argument of *any* macro should be free of side effects.


        Stefan