Breakpoint 1 at 0x........: file t.c, line 100. Continuing. Breakpoint 1, breakme (line=112) at t.c:100 100 if (line > 1000) #1 0x........ in main (argc=1, argv=0x........) at t.c:112 112 breakme(__LINE__); //break1 $1 = 0x........ "main name" $2 = "undefined" Continuing. Breakpoint 1, breakme (line=117) at t.c:100 100 if (line > 1000)