Has anyone ever had a use for the __COUNTER__ pre-processor macro?

Question

The __COUNTER__ symbol is provided by VC++ and GCC, and gives an increasing non-negative integral value each time it is used.

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Answer 1

I've never used it for anything but a DEBUG macro. It's convenient to be able to say

#define WAYPOINT \
    do { if(dbg) printf("At marker: %d\n", __COUNTER__); } while(0);