uniform half4 colorRed, colorGreen;

bool test() {
    bool ok = true;
    int x = 12 | 6;
    ok = ok && (x == 14);
    x = 254 & 7;
    ok = ok && (x == 6);
    x = 2 ^ 7;
    ok = ok && (x == 5);
    x = 1 << 4;
    ok = ok && (x == 16);
    // Left-shifting a negative integer is undefined in C++, but allowed in GPU shading languages.
    // https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=29093
    x = -2 << 2;
    ok = ok && (x == -8);
    x = 128 >> 2;
    ok = ok && (x == 32);
    x = 123 % 45;
    ok = ok && (x == 33);
    return ok;
}

half4 main(float2 coords) {
    return test() ? colorGreen : colorRed;
}