Following shader program causes segfault during glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &str);

```
#version 450


layout(location = 0, std140) uniform MatrixBlock {
        mat4 model;
        mat4 view;
        mat4 projection;
};


out gl_PerVertex {
        vec4 gl_Position;
};


void
main(void)
{
        gl_Position = vec4(1.0);
}
```

I know that binding should be used in this case for interface block, but should not the compiler give an error? Tested on r600 and llvmpipe.