When using indirect rendering and the program "framebufferobject" from the Qt demos a segmentation fault happens.

The segmentation fault is in src/glx/x11/indirect_vertex_array.c: __glXPushArrayState(), because glPushClientAttrib(GL_CLIENT_VERTEX_ARRAY_BIT) is called twice or more times.

The solution is to change src/glx/x11/indirect_vertex_array.c, line 293 (function glXInitVertexArrayState) from:

  arrays->stack = malloc(sizeof(struct array_stack_state)
                          * arrays->num_arrays);

to:

   arrays->stack = malloc( sizeof( struct array_stack_state )
                            * arrays->num_arrays *__GL_CLIENT_ATTRIB_STACK_DEPTH);