Re: Building Emacs overflowed pure space

[Richard Stallman]

Symbols are not copied to pure space at all.
This is because their slots are not constant.
However, make_symbol copies uninterned symbol names to pure space.
Since the existing dolist macro generates a new symbol each time,
these symbols share nothing in the compiled output; they are different
uninterned symbols whose names happen to be the same.  So lread.c
copies the name to pure space each time.