[...] > When the above code exits without printing "hi", we see this > call stack for instance (breakpoint on kill() in gdb): > > #0 kill () at ../sysdeps/unix/syscall-template.S:81 > #1 0x000000000045dd8e in termsig_handler (sig=<optimized out>) at sig.c:588 > #2 0x000000000045ddef in termsig_handler (sig=<optimized out>) at sig.c:554 > #3 0x00000000004466bb in set_job_status_and_cleanup (job=0) at jobs.c:3539 > #4 waitchld (block=block@entry=1, wpid=20802) at jobs.c:3316 > #5 0x000000000044733b in wait_for (pid=20802) at jobs.c:2485 > #6 0x0000000000437992 in execute_command_internal > (command=command@entry=0x70aa48, asynchronous=asynchronous@entry=0, > pipe_in=pipe_in@entry=-1, pipe_out=pipe_out@entry=-1, > fds_to_close=fds_to_close@entry=0x70bb68) at execute_cmd.c:829 > #7 0x0000000000437b0e in execute_command (command=0x70aa48) at > execute_cmd.c:390 > #8 0x0000000000435f23 in execute_connection (fds_to_close=0x70bb48, > pipe_out=-1, pipe_in=-1, asynchronous=0, command=0x70bb08) at > execute_cmd.c:2494 > #9 execute_command_internal (command=0x70bb08, > asynchronous=asynchronous@entry=0, pipe_in=pipe_in@entry=-1, > pipe_out=pipe_out@entry=-1, fds_to_close=fds_to_close@entry=0x70bb48) > at execute_cmd.c:945 > #10 0x000000000047955b in parse_and_execute (string=<optimized out>, > from_file=from_file@entry=0x4b5f96 "-c", flags=flags@entry=4) at > evalstring.c:387 > #11 0x00000000004205d7 in run_one_command (command=<optimized out>) at > shell.c:1348 > #12 0x000000000041f524 in main (argc=3, argv=0x7fffffffe198, > env=0x7fffffffe1b8) at shell.c:695 > > That is, SIGINT is being handled *after* the SIGINT handler has > been restored to its default of exiting the shell. [...]
Sorry, please disregard that. I thought the termsig_handler was being invoked upon SIGINT as the SIGINT handler, but it is being called explicitely by set_job_status_and_cleanup so the problem is elsewhere. child_caught_sigint is 0 while if I understand correctly it should be 1 for a cmd that calls exit() upon SIGINT. So that's probably probably where we should be looking. -- Stephane
