December 20, 2013
Using LDC 0.12.1 binary distribution from github on Windows 8.1 64-bit. Using the mingw recommended in the readme.

hello.d:
---
import std.stdio;

void main()
{
    writeln("Hello, World!");
    readln();
}
---

ldc2 hello.d -g
gdb hello.exe
GNU gdb (rubenvb-4.8.0) 7.5.91.20130322-cvs
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-w64-mingw32".
For bug reporting instructions, please see:
<mingw-w64-public@lists.sourceforge.net>...
Reading symbols from hello.exe...DW_FORM_strp pointing outside of .debug_str section [in module hello.exe]
(no debugging symbols found)...done.

ldc2 hello.d
gdb hello.exe
GNU gdb (rubenvb-4.8.0) 7.5.91.20130322-cvs
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-w64-mingw32".
For bug reporting instructions, please see:
<mingw-w64-public@lists.sourceforge.net>...
Reading symbols from hello.exe...done.


The debugging doesn't work with gdb and for example Intel vtune profiler crashes when trying to read the debug info. I wonder why gdb doesn't complain of missing debug info when omitting the -g flag.

On linux things seem to work fine.
December 20, 2013
Hi Mikko!

On Friday, 20 December 2013 at 13:38:57 UTC, Mikko Ronkainen wrote:
> Reading symbols from hello.exe...DW_FORM_strp pointing outside of .debug_str section [in module hello.exe]
> (no debugging symbols found)...done.

This sounds like a LLVM problem placing the debug info in the wrong location.
I try to check this with LLVM 3.4 (the binary distribution is compiled with LLVM 3.3).

Regards,
Kai