bug#8574: Emacs fails to build when Emacs is configured with --enable-checking=conslist

[Dmitry Gutov]

I'm seeing something similar on Ubuntu (in a VM), branch emacs-24.

I haven't been able to see compilation finish when ./configure was run 
with --enable-checking=conslist or (obviously) --enable-checking=all.

bytecomp.el does compile, but it happens veeery sloooooowly, as does 
byte compilation and loading of all other .el files. The whole process 
doesn't finish in half a day, at least.

./configure --enable-checking (without explicit value)
make bootstrap

and

./configure
make bootstrap CFLAGS="-DENABLE_CHECKING"

complete quickly enough, so it looks to me the conslist checker just 
isn't supposed to be used.