Strange segfault (Derelict/OpenGL)

[Robin Schroer via Digitalmars-d-learn]

On Friday, 29 August 2014 at 11:51:47 UTC, Marc Schütz wrote:
> On Friday, 29 August 2014 at 11:23:34 UTC, Robin Schroer wrote:
>> Upon running with gdb, I get:
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x0000000000000000 in ?? ()
>>
>> which is not really helpful to me.
>
> Can you still try to get a backtrace with `bt`? This looks like 
> it's calling a null function pointer. I'm not familiar with 
> Derelict, but I remember that some initialization needs to be 
> done which involves setting up function pointers; your problem 
> is probably related to that.

Yes, I can:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00000000004ad33e in display.Display.render() 
(this=0x7ffff7ecfe00)
     at source/dgame/display.d:95
#2  0x00000000004a01d5 in D main (args=...) at source/app.d:41
#3  0x00000000004cd9af in rt.dmain2._d_run_main() ()
#4  0x00000000004cd902 in rt.dmain2._d_run_main() ()
#5  0x00000000004cd968 in rt.dmain2._d_run_main() ()
#6  0x00000000004cd902 in rt.dmain2._d_run_main() ()
#7  0x00000000004cd883 in _d_run_main ()
#8  0x00000000004acfb5 in main ()

display.Display.render() is what tries to render the triangle 
using a glBegin-block.