On Fri, Jul 21, 2017 at 7:15 AM, David Edelsohn <dje....@gmail.com> wrote: > AIX still uses DBX as the primary debugging format. AIX supports > DWARF but the AIX toolchain does not fully interoperate with DWARF > generated by GCC.
We could still deprecate DBX_DEBUG while leaving XCOFF_DEBUG alone for now. This would encourage people to migrate to DWARF2. We won't be able to drop dbxout.c until both DBX_DEBUG and XCOFF_DEBUG are dropped which could be a while, but we can perhaps avoid any new users of stabs. I see that avr-*, *-lynx, pre-darwin9 32-bit i686-darwin, *-openbsd, pdp11-*, vax-*, and cygwin/mingw32 with obsolete assemblers still default to DBX_DEBUG. Some of those can be dropped, and the others can migrate to dwarf. There is also the matter of SDB_DEBUG which is still supported, and is no longer used by anyone, as we have already deprecated all of the COFF targets that were using it. SDB support for C++ is even worse than the DBX support. This should be no problem to deprecate and remove. We could perhaps even just drop it without bothering to deprecate it first. Jim
