https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56926
--- Comment #16 from asmwarrior <asmwarrior at gmail dot com> --- I think I may find some hard coded which limit the pch file size, it is located in: gcc/config/i386/host-mingw32.c You can view the file in https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=gcc/config/i386/host-mingw32.c;hb=HEAD There are some code around the line 45 /* FIXME: Is this big enough? */ static const size_t pch_VA_max_size = 128 * 1024 * 1024; It is about 128M as I can see. So, I would suggest to set a larger value of this variable, and try to see it could accept a larger pch file.
