static const char *CompositeOperatorToPSDBlendMode(CompositeOperator op)
{
  const char
    *blend_mode;

  switch (op)
  {
    case ColorBurnCompositeOp:  blend_mode = "idiv";  break;
    case ColorDodgeCompositeOp: blend_mode = "div ";  break;
    case ColorizeCompositeOp:   blend_mode = "colr";  break;
    case DarkenCompositeOp:     blend_mode = "dark";  break;
    case DifferenceCompositeOp: blend_mode = "diff";  break;
    case DissolveCompositeOp:   blend_mode = "diss";  break;
    case ExclusionCompositeOp:  blend_mode = "smud";  break;
    case HardLightCompositeOp:  blend_mode = "hLit";  break;
    case HardMixCompositeOp:    blend_mode = "hMix";  break;
    case HueCompositeOp:        blend_mode = "hue ";  break;
    case LightenCompositeOp:    blend_mode = "lite";  break;
    case LinearBurnCompositeOp: blend_mode = "lbrn";  break;
    case LinearDodgeCompositeOp:blend_mode = "lddg";  break;
    case LinearLightCompositeOp:blend_mode = "lLit";  break;
    case LuminizeCompositeOp:   blend_mode = "lum ";  break;
    case MultiplyCompositeOp:   blend_mode = "mul ";  break;
    case OverCompositeOp:       blend_mode = "norm";  break;
    case OverlayCompositeOp:    blend_mode = "over";  break;
    case PinLightCompositeOp:   blend_mode = "pLit";  break;
    case SaturateCompositeOp:   blend_mode = "sat ";  break;
    case ScreenCompositeOp:     blend_mode = "scrn";  break;
    case SoftLightCompositeOp:  blend_mode = "sLit";  break;
    case VividLightCompositeOp: blend_mode = "vLit";  break;
    default:                    blend_mode = "norm";
  }
  return(blend_mode);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.