https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21111
--- Comment #12 from Jim Wilson <wilson at gcc dot gnu.org> --- I no longer have access to IA-64 hardware. I was leaving myself as maintainer just so that there was someone responsible for answering questions. I don't care if the port survives or not. I can resign if that makes things easier. There is an ia64 debian group that has hardware, and is still doing debian work. They would be disappointed if the ia64 port was deprecated. I get the occasional binutils and gcc bug reports from them, and am occasionally able to fix them even though I don't have hardware. I think that solving this bug requires that all locals get initialized to 0 when defined. Otherwise, you may accidentally read a register with the nat bit set when doing bit-field operations on a register. I don't care enough about ia64 to try to fix this.