https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63995
--- Comment #3 from Ilya Enkovich <enkovich.gnu at gmail dot com> --- Patch removing duplicating bounds symbols is in review. With this patch applied bootstrap goes till the end but there are lots of stage2 and stage3 comparison error. I looked into one of them and the difference is caused by '-gtoggle' option used for stage2 build and not used for stage3 build.
