https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60833
--- Comment #3 from David Blaikie <dblaikie at gmail dot com> --- FWIW, bug on the GDB side seems to have been fixed ( https://sourceware.org/bugzilla/show_bug.cgi?id=16841 ) - might be nice to fix the GCC side too. (though, admittedly, I don't know that this extra debug info provides much value at the moment - I think GDB mostly looks straight through typedefs)