(gdb) r
Starting program: /Users/doob/development/d/test 
Reading symbols for shared libraries +......................... done

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
0x00002689 in D4test3barFZS4test3Foo ()
(gdb) bt
#0  0x00002689 in D4test3barFZS4test3Foo ()
#1  0x00002647 in _Dmain ()
#2  0x000140c5 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7runMainMFZv ()
#3  0x00013c78 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv ()
#4  0x00014113 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi6runAllMFZv ()
#5  0x00013c78 in D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv ()
#6  0x00013c46 in _d_run_main ()
#7  0x00013ae9 in main ()
(gdb) disas       
Dump of assembler code for function D4test3barFZS4test3Foo:
0x00002668 <D4test3barFZS4test3Foo+0>:	push   %ebp
0x00002669 <D4test3barFZS4test3Foo+1>:	mov    %esp,%ebp
0x0000266b <D4test3barFZS4test3Foo+3>:	sub    $0x20,%esp
0x0000266e <D4test3barFZS4test3Foo+6>:	push   %esi
0x0000266f <D4test3barFZS4test3Foo+7>:	push   %edi
0x00002670 <D4test3barFZS4test3Foo+8>:	mov    %eax,-0x4(%ebp)
0x00002673 <D4test3barFZS4test3Foo+11>:	sub    $0x8,%esp
0x00002676 <D4test3barFZS4test3Foo+14>:	push   $0x0
0x00002678 <D4test3barFZS4test3Foo+16>:	lea    -0x10(%ebp),%ecx
0x0000267b <D4test3barFZS4test3Foo+19>:	push   %ecx
0x0000267c <D4test3barFZS4test3Foo+20>:	call   0x26a0 <foo>
0x00002681 <D4test3barFZS4test3Foo+25>:	add    $0xc,%esp
0x00002684 <D4test3barFZS4test3Foo+28>:	mov    %eax,%esi
0x00002686 <D4test3barFZS4test3Foo+30>:	mov    -0x4(%ebp),%edi
0x00002689 <D4test3barFZS4test3Foo+33>:	movsl  %ds:(%esi),%es:(%edi)
0x0000268a <D4test3barFZS4test3Foo+34>:	movsl  %ds:(%esi),%es:(%edi)
0x0000268b <D4test3barFZS4test3Foo+35>:	movsl  %ds:(%esi),%es:(%edi)
0x0000268c <D4test3barFZS4test3Foo+36>:	mov    -0x4(%ebp),%eax
0x0000268f <D4test3barFZS4test3Foo+39>:	pop    %edi
0x00002690 <D4test3barFZS4test3Foo+40>:	pop    %esi
0x00002691 <D4test3barFZS4test3Foo+41>:	leave  
0x00002692 <D4test3barFZS4test3Foo+42>:	ret    
0x00002693 <D4test3barFZS4test3Foo+43>:	nop    
0x00002694 <D4test3barFZS4test3Foo+44>:	nop    
0x00002695 <D4test3barFZS4test3Foo+45>:	nop    
0x00002696 <D4test3barFZS4test3Foo+46>:	nop    
0x00002697 <D4test3barFZS4test3Foo+47>:	nop    
0x00002698 <D4test3barFZS4test3Foo+48>:	nop    
0x00002699 <D4test3barFZS4test3Foo+49>:	nop    
0x0000269a <D4test3barFZS4test3Foo+50>:	nop    
0x0000269b <D4test3barFZS4test3Foo+51>:	nop    
0x0000269c <D4test3barFZS4test3Foo+52>:	nop    
0x0000269d <D4test3barFZS4test3Foo+53>:	nop    
0x0000269e <D4test3barFZS4test3Foo+54>:	nop    
0x0000269f <D4test3barFZS4test3Foo+55>:	nop    
End of assembler dump.
(gdb)