#version 450

#extension GL_ARB_shader_group_vote : enable

layout(local_size_x = 4, local_size_y = 4) in;

layout(std430, binding = 0) buffer Buffers
{
    bool b;
};

void main()
{
    bool b1 = b;

    b1 = anyInvocationARB(b1);
    b1 = allInvocationsARB(b1);
    b1 = allInvocationsEqualARB(b1);

    b = b1;
}