How do I enable reverse debugging on a multi-threaded program?
To do this, you need to activate the instruction-recording target, by executing the command
recordfrom the point where you want to go forward and backward (remember that the recording will significantly slow down the execution, especially if you have several threads!)
I've just checked that it's working correctly:
(gdb) info threads Id Target Id Frame 2 Thread 0x7ffff7860700 (LWP 5503) "a.out" hello (arg=0x601030) at test2.c:16* 1 Thread 0x7ffff7fca700 (LWP 5502) "a.out" main (argc=2, argv=0x7fffffffe2e8) at test2.c:47...
(gdb) next49 p[i].id=i;(gdb) reverse-next47 for (i=0; i<n; i++)...
17 printf("Hello from node %d\n", p->id);(gdb) nextHello from node 118 return (NULL);(gdb) reverse-next17 printf("Hello from node %d\n", p->id);