[Bug pch/57242] gcc ignores precompiled headers unless the .gch and TU's are compiled with certain combinations of -g flag

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57242

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to etherice from comment #0)
> I put a #warning in the my_pch.hpp file to be sure of when PCH were being
> ignored (though, the long delay also made it quite obvious).

You can use -Winvalid-pch for that instead.