[cube][0.11.9] mystery wall placing segfault

[pyrolytic_tungsten]

I loaded an autosave from playing tight spot level 2 where time was running and reset the level. I got a segfault while placing walls by dragging the mouse all over to fill all the blank spots. I couldn't reproduce it but I have a stack trace so hopefully you can find a bug. Running Linux x64.

GDB says

4646.208884 Notice Scenario.cpp:126: Loading map /games/factorio/saves/_autosave1.zip
4646.227070 Info Scenario.cpp:160: Map version 0.11.8-1
[New Thread 0x7fffb0bcb700 (LWP 3908)]
[Thread 0x7fffe8dd7700 (LWP 3907) exited]
[New Thread 0x7fffe8dd7700 (LWP 3909)]
[Thread 0x7fffb0bcb700 (LWP 3908) exited]
4649.390577 Info Scenario.cpp:106: Loading inner save before-run
4649.390623 Notice Scenario.cpp:126: Loading map
4649.390738 Info Scenario.cpp:160: Map version 0.11.8-1
[New Thread 0x7fffb0bcb700 (LWP 3910)]
[Thread 0x7fffe8dd7700 (LWP 3909) exited]
[New Thread 0x7fffe8dd7700 (LWP 3912)]
[Thread 0x7fffe8dd7700 (LWP 3912) exited]
[New Thread 0x7fffe8dd7700 (LWP 3913)]

Program received signal SIGSEGV, Segmentation fault.
0x00000000009e995c in ?? ()
(gdb) thread apply all bt

Thread 19 (Thread 0x7fffe8dd7700 (LWP 3913)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x0000000000a527c3 in ?? ()
#2 0x0000000000a115f6 in ?? ()
#3 0x0000000000a70e5e in ?? ()
#4 0x0000000000a70bde in ?? ()
#5 0x00007ffff7bc4182 in start_thread (arg=0x7fffe8dd7700) at pthread_create.c:312
#6 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (Thread 0x7fffb0bcb700 (LWP 3910)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00000000007df2ab in ?? ()
#2 0x000000000086faa3 in ?? ()
#3 0x0000000000bf156a in ?? ()
#4 0x00007ffff7bc4182 in start_thread (arg=0x7fffb0bcb700) at pthread_create.c:312
#5 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 13 (Thread 0x7fffe95d8700 (LWP 3676)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00000000007df2ab in ?? ()
#2 0x00000000007e006d in ?? ()
#3 0x0000000000bf156a in ?? ()
#4 0x00007ffff7bc4182 in start_thread (arg=0x7fffe95d8700) at pthread_create.c:312
#5 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (Thread 0x7fffea3fd700 (LWP 3675)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00000000007df2ab in ?? ()
#2 0x00000000007e006d in ?? ()
#3 0x0000000000bf156a in ?? ()
#4 0x00007ffff7bc4182 in start_thread (arg=0x7fffea3fd700) at pthread_create.c:312
#5 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7fffeabfe700 (LWP 3674)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00000000007df2ab in ?? ()
#2 0x00000000007e006d in ?? ()
#3 0x0000000000bf156a in ?? ()
#4 0x00007ffff7bc4182 in start_thread (arg=0x7fffeabfe700) at pthread_create.c:312
#5 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7fffeb3ff700 (LWP 3673)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1 0x00000000007df2ab in ?? ()
#2 0x00000000007e006d in ?? ()
#3 0x0000000000bf156a in ?? ()
#4 0x00007ffff7bc4182 in start_thread (arg=0x7fffeb3ff700) at pthread_create.c:312
#5 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7ffff15c6700 (LWP 3662)):
#0 0x0000000000a0cd21 in ?? ()
#1 0x0000000000a0668e in ?? ()
#2 0x0000000000a0668e in ?? ()
#3 0x0000000000a11c9a in ?? ()
#4 0x0000000000aa7b5a in ?? ()
#5 0x0000000000a70e5e in ?? ()
#6 0x0000000000a70bde in ?? ()
#7 0x00007ffff7bc4182 in start_thread (arg=0x7ffff15c6700) at pthread_create.c:312
#8 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7ffff2a38700 (LWP 3661)):
#0 0x00007ffff5f67823 in select () at ../sysdeps/unix/syscall-template.S:81
#1 0x0000000000abe250 in ?? ()
#2 0x0000000000a70bde in ?? ()
#3 0x00007ffff7bc4182 in start_thread (arg=0x7ffff2a38700) at pthread_create.c:312
#4 0x00007ffff5f6fefd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7ffff7fb08c0 (LWP 3645)):
#0 0x00000000009e995c in ?? ()
#1 0x00000000009e983d in ?? ()
#2 0x00000000009eb174 in ?? ()
#3 0x00000000009a564e in ?? ()
#4 0x00000000009a5fe5 in ?? ()
#5 0x00000000009a6092 in ?? ()
#6 0x0000000000825999 in ?? ()
#7 0x0000000000967fab in ?? ()
#8 0x000000000096a7ff in ?? ()
#9 0x000000000044136e in ?? ()
#10 0x00007ffff5e96ec5 in __libc_start_main (main=0x43f000, argc=2, argv=0x7fffffffdb28, init=<optimized out>,
fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdb18) at libc-start.c:287
#11 0x0000000000442a71 in ?? ()

[cube]

The crash is in some opengl function and the stack trace is completely unfamiliar. Some allegro internals. I would guess it is related to your graphics drivers, but there's no way for me to I'm afraid I'll have to move this to 1/0 magic ... Please report if the bug reappears

[pyrolytic_tungsten]

The bug seems to be pretty rare considering that this is the only segfault I've gotten not related to a known bug (previous versions). For reference I run Kubuntu x64 with a GeForce GT 240 and the Nvidia version 304.125 drivers (newer drivers prevent X from starting).