On-the-fly patching of executable code includes placing a block of modified instructions in memory, identifying a block of code to be patched, storing instructions to be patched from the block of code to be patched in a storage location, change the instructions to be patched to mark instructions, and adding a jump to the block of modified instructions in the block of code. The above defined novel heterocyclic compounds of formula exhibit powerful insecticidal properties. , high purity liquid reagents and chemical mechanical polishing compositions used to manufacture microelectronic device products, having capability for detection of an empty or near-empty condition when the contained liquid is at or approaching depletion during dispensing operation. A signal amplitude detector detects the amplitudes of the plurality of sinusoidal components included in the modulation signal M from an output signal M\u2032 of the phase detector, and an operation processor calculates a ratio of the detected amplitudes and the known amplitudes for each of the sinusoidal components, respectively.