https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64081
--- Comment #35 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- Hmmm, I see the changes in gcc/dbxout.h may override the DBX_* changes I made to config/rs6000/rs6000.h. I'll attempt to patch gcc/dbxout.h instead. I will report back. BTW David, if there's a point in the GCC history with stabs continuation support you suggest I start my bisection, let me know. Hopefully that will also exhibit a bootstrap failure with the RTL patch in this PR.