Crash in VBoxOGLpackspu.so when using glInterleavedArrays

[Philip Taylor]

When running the game 0 A.D. and starting a match, it crashes inside the guest with

Program received signal SIGSEGV, Segmentation fault.
0x00007fffc75e8f86 in ?? () from /usr/lib/VBoxOGLpackspu.so
(gdb) bt
#0  0x00007fffc75e8f86 in ?? () from /usr/lib/VBoxOGLpackspu.so
#1  0x00007fffc75be86b in crPackExpandArrayElement () from /usr/lib/VBoxOGLpackspu.so
#2  0x00007fffc75bea10 in crPackExpandDrawArrays () from /usr/lib/VBoxOGLpackspu.so
#3  0x00000000006b9653 in CMiniMap::Draw (this=0x7fffca6f02f0) at ../../../source/gui/MiniMap.cpp:404

where source/gui/MiniMap.cpp is doing

glInterleavedArrays(GL_C4UB_V2F, sizeof(MinimapUnitVertex), &vertexArray[0]);
glDrawArrays(GL_POINTS, 0, (GLsizei)vertexArray.size());

glDisableClientState(GL_COLOR_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);

I changed the game in ​http://trac.wildfiregames.com/changeset/10419 to explicitly perform equivalent behaviour to glInterleavedArrays, which stops it from crashing, suggesting a possible problem with glInterleavedArrays.

I think I have the latest version of Guest Additions installed, though I'm not sure how to verify that. I haven't tried setting up a minimised test case for this bug.