Comment 35 for bug 1641264

Well; I imagine gdb and valgrind are confused by the constructor or something:

        pFramebuffer = new OpenGLFramebuffer();

is the line; and the (out of line) constructor is:

OpenGLFramebuffer::OpenGLFramebuffer() :
    mnId( 0 ),
    mnWidth( 0 ),
    mnHeight( 0 ),
    mnAttachedTexture( 0 ),
    mpPrevFramebuffer( nullptr ),
    mpNextFramebuffer( nullptr )
{
    glGenFramebuffers( 1, &mnId );
    CHECK_GL_ERROR();
    VCL_GL_INFO( "Created framebuffer " << (int)mnId );
}

but I guess (libmerged LTO magic) this gets inlined in its only call site even across translation units.

I imagine the problem is that your driver has a NULL 'glGenFramebuffers' method - which we call via glew. I guess we should check for that and disable GL.
 I assume your drivers are horribly old (?) =)