https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71850
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to christian wilmes from comment #2) > Which component performs the CreateProcess call then? I am saying there is code in gcc.c that handles the linking side of things but not calling of cc1. https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/gcc.c;h=7460f6af148969734c6cffeef870388355ef76cf;hb=HEAD#l5616 For an example. There is another piece of code which handles the spec i with combine_inputs set but I have not looked into how combine_inputs is set to true and what the 'i' command is used. https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/gcc.c;h=7460f6af148969734c6cffeef870388355ef76cf;hb=HEAD#l5504