[PATCH] Initial DWARF64 support for .debug_line

[Ed Maste]

  The version was in the Phabricator review or email :-)
  gcc 4.2.1, gas "2.17.50"

  I agree that this is a shame, but it's what we've got.  I haven't investigated in detail, but quick Googling suggests that the GNU toolchain switched n64 Linux to DWARF32 in 2006; I did not find evidence that the same change was made for FreeBSD.

http://llvm-reviews.chandlerc.com/D1988