https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90392
--- Comment #1 from ohaiziejohwahkeezuoz at xff dot cz --- Also, the issue did not happen with 8.3.0 and the same binutils. An I also get this assertion when building with i686-musl-linux cross-compiler, but interestingly, when building a differnt package (gnutls). -ffresolution=%u.res expansion is also wrong in that case, though I'm not sure it's what causes the assertion failure.