https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103910
--- Comment #12 from Eric Gallager <egallager at gcc dot gnu.org> --- (In reply to Sam James from comment #11) > (In reply to Andrew Pinski from comment #10) > > Someone would have hit this a long time ago, in GCC 4.3.0 or latter. > > My point was that some software has recently started building with PCH by > default and hence it's only appeared now and I was surprised at the number > of people who were affected. I understand the bug isn't new, it's just been > exposed by a change in the ecosystem. Could you provide some more info on the software that has recently started building with PCH by default? There has been some talk of wanting to rip PCH out of GCC at some point, but if there's software out there actually depending on it, that could be useful info for the argument that PCH ought to be kept.