[Bug bootstrap/70704] [6 Regression] AIX bootstrap comparison failure

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70704

--- Comment #46 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, my current thinking is that this is related to make -jN bootstrap doing
stage1 checking by default.
Guess with --enable-stage1-checking=release it would bootstrap fine, but
haven't verified that.
But, what I see is that if I build build/ggc-none.o with stage1 cc1plus with
additional -fno-checking -g0, the result is the same as when it is built with
stage2 cc1plus -g0, and similarly if it is built with stage1 cc1plus with -g0,
the result is the same when it is built with stage2 cc1plus -g0 -fchecking.
I've applied the https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70594#c20 hack
(only the tree.c part of it) and I can see that with -fchecking there are
different DECL_UIDs (more of them too) created.