### Compilation failed:

error: 9: expected 'vec2', but found 'int'
    vec2 bad1 = 0;
                ^
error: 10: expected 'int', but found 'mat2'
    int bad2 = mat2(0);
               ^^^^^^^
error: 11: expected 'bvec2', but found 'vec2'
    bvec2 bad3 = vec2(0);
                 ^^^^^^^
error: 12: expected 'float2', but found 'vec3'
    float2 bad4 = vec3(0);
                  ^^^^^^^
error: 13: expected 'mat4', but found 'float3x3'
    mat4 bad5 = float3x3(0);
                ^^^^^^^^^^^
error: 14: expected 'vec4', but found 'ivec4'
    return ivec4(1);
           ^^^^^^^^
6 errors