example instructions cause crash

[FirefighterBlu3]

after updating the top level makefile to simpleCounter project instead of dummy, and attiny2313, the gsim app will segfault after being built:

[david@Scott gui]$ gdb ./app
[...]
Reading symbols from ./app...done.
(gdb) r
Starting program: /home/david/gsimavr/src/app 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
wrn:102:model.c:createAvr: Loading firmware: /home/david/gsimavr/example/simpleCounter.elf
Loaded 94 .text at address 0x0
Loaded 0 .data
wrn:110:model.c:createAvr: Generating AVR of type attiny2313
wrn:134:model.c:loadGsimavrCore: Loaded core 'attiny2313'
err:189:controller.c:setupConnectivity: Registering the avr registers 'A'
err:189:controller.c:setupConnectivity: Registering the avr registers 'B'
err:189:controller.c:setupConnectivity: Registering the avr registers 'D'
[New Thread 0x7ffff19d3700 (LWP 17764)]
err:49:controller.c:watcher_ddr: IRQ = 9   VALUE = 255

Thread 2 "app" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff19d3700 (LWP 17764)]
0x00007ffff7845729 in glClearColor () from /usr/lib/libGL.so.1
(gdb) bt
#0  0x00007ffff7845729 in glClearColor () from /usr/lib/libGL.so.1
#1  0x00005555555565ff in renderScene () at view.c:254
#2  0x00007ffff6ddd1d2 in avr_raise_irq_float (irq=0x5555557743d8, value=value@entry=255, floating=0) at sim/sim_irq.c:214
#3  0x00007ffff6ddd22f in avr_raise_irq (irq=<optimized out>, value=value@entry=255) at sim/sim_irq.c:232
#4  0x00007ffff6de5b07 in avr_ioport_ddr_write (avr=0x55555576eab0, addr=<optimized out>, v=255 '\377', param=0x555555772fd0)
    at sim/avr_ioport.c:123
#5  0x00007ffff6dda41d in _avr_set_r (v=255 '\377', r=55, avr=0x55555576eab0) at sim/sim_core.c:197
#6  _avr_set_ram (v=255 '\377', addr=55, avr=0x55555576eab0) at sim/sim_core.c:248
#7  avr_run_one (avr=0x55555576eab0) at sim/sim_core.c:1327
#8  0x00007ffff6de019d in avr_callback_run_raw (avr=0x55555576eab0) at sim/sim_avr.c:352
#9  0x00007ffff6de07aa in avr_run (avr=0x55555576eab0) at sim/sim_avr.c:392
#10 0x0000555555557644 in avr_run_thread (ignore=<optimized out>) at controller.c:167
#11 0x00007ffff6bba08a in start_thread () from /usr/lib/libpthread.so.0
#12 0x00007ffff66ed42f in clone () from /usr/lib/libc.so.6

view.c starts as:

    252 void renderScene(void) {
    253 
    254         glClearColor(0.8F, 0.8F, 0.8F, 1.0F);
    255         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

valgrind indicates an invalid read of size 8,
Address 0x660 is not stack'd, malloc'd or (recently) free'd

[FirefighterBlu3]

there appears to be threading issues. if the pthread avr_run_thread() code is disabled so the thread is never created and avr_run(avr) never happens, the GL context is created and runs just fine