Can't debug dmd binary

[Jerry via Digitalmars-d]

Hi folks,

I'm unable to debug binaries built with dmd 2.065.  The platform is
x86-64 Ubuntu 14.04.  This is gdb 7.7.

If I have a simple program:

nodebug.d:

void main() {
  int i;
  i = 3;
}

dmd -g nodebug.d

jlquinn at wyvern:~/d$ gdb nodebug 
GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7
Copyright (C) 2014 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 "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from nodebug...done.
(gdb) b main
Breakpoint 1 at 0x416ecc
(gdb) run
Starting program: /home/jlquinn/d/nodebug 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Breakpoint 1, 0x0000000000416ecc in main ()
(gdb) l
1	dl-debug.c: No such file or directory.
(gdb) 


Using dmd -gc doesn't help at all.  Any suggestions?

Thanks
Jerry