GLSL ES 3 mix function bad overload.

Running the r3p0 drivers I've hit an issue that no other video drivers(Qualcomm, Mesa, Nvidia, fglrx) seem to hit.

Running a very simple fragment shader as an example.

void main()
{
  ivec2 uv = ivec2(gl_FragCoord.xy);
  ivec2 ts = textureSize(samp9, 0);
  vec4 c0 = texelFetch(samp9, ivec2(uv.x / 2, ts.y - uv.y - 1), 0);
  float y = mix(c0.b, c0.r, uv.x & 1);
  float yComp = 1.164 * (y - 0.0625);
  float uComp = c0.g - 0.5;
  float vComp = c0.a - 0.5;
  ocol0 = vec4(yComp + (1.596 * vComp),
  yComp - (0.813 * vComp) - (0.391 * uComp),
  yComp + (2.018 * uComp),
  1.0); 
}

I'm having an issue with the mix function on line six. Basically the shader compiler doesn't realize that uv.x & 1 will be a boolean result and fails out.

A simple remedy to the issue is wrapping it like "(uv.x & 1) != 0" but in this case it really shouldn't be necessary.

Hope you guys fix the issue.