https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80759
--- Comment #2 from Daniel Santos <daniel.santos at pobox dot com> --- Actually, I just realized that it won't help to move do_test.S into ms-sysv.c as inline asm because each test still needs a unique ms-sysv-generated.h header that's generated by the output of gen.cc. Although I suppose it's possible to generate all of the headers in advance (with unique names) and then set the header name in the options with -DGEN_HEADER_NAME=name.h -- that will have its own set of issues.