https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70704
--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 38320 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38320&action=edit 2.5.37 -> 2.6 So, can you please verify that the RC1 tarball bootstraps if you apply the attached patch (which should change the file as if I've created rc1 with flex 2.6 instead of 2.5.37)? Or do the #line filenames matter instead? I normally bootstrap with ../configure and therefore the paths are like ../../gcc/something, but in the RC tarballs it is /d/gcc-6.0.1-RC-20160415/gcc-6.0.1-RC-20160415/gcc/something (the /d is my dest dir symlink to make those as short as possible, the rest comes from gcc_release script).