http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53238
--- Comment #13 from Daniel Richard G. <skunk at iskunk dot org> 2012-06-10 22:39:36 UTC --- Hi Jonathan, I've checked and double-checked this, and was hoping you could offer some insight: I get the "Undefined symbol: vtable for std::ctype<char>" error only when bootstrapping. If I build 4.7.0 with a previously-built C-only 4.7.0 + --disable-bootstrap, everything else the same, the build completes successfully. Can you make anything of that?