Watchpoint 1: y
Starting program: 
Stopping in BEGIN ...
Watchpoint 1: y
  Old value: untyped variable
  New value: 1
main() at `symtab10.awk':1
1       BEGIN { SYMTAB["x"] ; y=1 ; y++ }
no symbol `x' in current context
Program exited normally with exit value: 0
EXIT CODE: 2