/* compile with: gcc -pthread -Wall recthr.c -o recthr */
#include <stdio.h>
#include <pthread.h>
#include <unistd.h>

volatile int th1_done;

void *th1(void *_)
{
  printf("run\ngdb -p %d\nthen in gdb type:\ncont\nand press enter in this term\n", getpid());
  getchar();
  th1_done = 1;
  return 0;
}

int traceme(void)
{
  int x=0;
  int i=0;
  for (x = 0; x < 10; x++) i += x*2;
  return i;
}

void after_traceme(int x)
{
  printf("%d\n", x);
}

void *th2(void *x)
{
  int i = traceme();
  after_traceme(i);
  return 0;
}

void new_thread(void *(*f)(void *))
{
  pthread_t th;
  pthread_create(&th, 0, f, 0);
}

int main(void)
{
  new_thread(th1);
  while (!th1_done) usleep(10*1000);
  printf("type:\nctrl+c\nhb *%p\nhb *%p\ncont\nin gdb and press enter in this term\n",
         traceme, after_traceme);
  getchar();
  printf("type:\nset scheduler-locking on\nrecord full\ncont\nin gdb\n");
  printf("then:\nrecord save /tmp/XX\nit should fail\n");
  printf("then type:\ninfo record\nit should segfault\n");
  printf("and happy debugging to you too.:)\n");
  new_thread(th2);
  while (1) pause();
}