Conditional Break-Points

• Let us suppose we have a long loop, and we want to start debugging only at the 503rd iteration.
• We do this using conditional break-points:

  Breakpoint 1, func_long_calc (i=5000) at c1.c:5
  5		int j = 5;
  (gdb) list 8,10
  8		for (plastic = 0; plastic < i; ++plastic) {
  9			j += plastic;
  10		}
  (gdb) break 9 if plastic == 503
  Breakpoint 4 at 0x804835a: file c1.c, line 9.
  (gdb) cont
  Continuing.
  
  Breakpoint 4, func_long_calc (i=5000) at c1.c:9
  9			j += plastic;
  (gdb) print plastic 
  $1 = 503
       

Originally written by guy keren