https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105302
--- Comment #6 from Ian Lance Taylor <ian at airs dot com> --- The magic string itself is fine: it's the "v3;\n". Perhaps there is some problem locating it in the file. Some of the relevant code is go_read_export_data in gcc/go/go-backend.cc. Try to find out what it returns.