https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60723
--- Comment #12 from Dodji Seketeli <dodji at gcc dot gnu.org> --- Created attachment 33010 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33010&action=edit A patch candidate that I am currently testing This the patch I am running through bootstrap at the moment. The patch basically makes the pre-processor detects changes in system-ness of tokens and upon each of these change, emits a line marking directive so that the information about the system-ness change is not lost. I haven't commented the code yet. Nicholas, maybe you could test the patch and give me feedback until my (slow) machine completes the bootstrap? Thanks.
