alias __vector(float[4]) float4;

void main() {    
    float4 a = 1, b = 2;
    
    // 2.065: segfault
    // 2.066: Error: cannot compare float[4] and int[]
    assert((a + b).array == [3, 3, 3, 3]); 
    
    // segfault on both 2.065 and 2.066
    assert((a + b).array == [3.0f, 3.0f, 3.0f, 3.0f]);
}

The code works with ldc, however I had to revert changes to TypeVector::dotExp() from https://github.com/D-Programming-Language/dmd/pull/3467