https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80527
--- Comment #3 from Milo <milo.zhang at spreadtrum dot com> --- (In reply to Marc Glisse from comment #2) > 4.8 is not maintained anymore, and I think this is already fixed in 4.9. Can > you check with a newer compiler? Thank you for your rapid reply. We are using Ubuntu 12.04. It used gcc 4.8.5 and also has the same issue. Furthermore, some tools from an EDA company are using gcc 4.8.3 as the only compiler. We believed that would help if it could be fixed. By the way, you mentioned about 4.9 version. Is that means 4.9 is still be maintaining?