What's the proper way to debug D programs with GDB?

[Walter Bright]

grauzone wrote:
> dmd producing buggy debugging information seems to be an old problem:
> http://d.puremagic.com/issues/show_bug.cgi?id=1079

The problem is that dmd produces dwarf debug info according to the dwarf spec. 
When gdb fails, I have no clue why, and nobody has ever been able to figure out 
just *what* in the dwarf info is causing gdb to fail.

Some problems were identified a few months back, and those were fixed (evidently 
gdb cannot handle module records, and gdb also relied on some undocumented stuff).

If anyone wants to peruse the gdb source and figure out exactly *what* it is 
choking on, that would be most appreciated.