Eating/ignoring SIGTRAP?

[Manouchehri]

I could have sworn there used to be a way to have rr record eat/ignore/handle SIGTRAPs from the target program, so that they wouldn't be sent to the target application's handler.

I tried --ignore-signal=5 and --continue-through-signal=SIGTRAP, but neither seems to stop my target from halting itself. =(

[rocallahan]

Works for me.

#include <unistd.h>
#include <signal.h>
#include <stdio.h>

static volatile int did_run = 0;

static void handle(int sig) {
  did_run = 1;
}

int main(int argc, char** argv)
{
  signal(SIGTRAP, handle);
  kill(getpid(), SIGTRAP);
  printf("did_run = %d\n", did_run);
  return 0;
}

and

$ gcc -o ~/tmp/test ~/tmp/test.c && rr record --ignore-signal=5 ~/tmp/test
rr: Saving execution to trace directory `/home/roc/.local/share/rr/test-1'.
did_run = 0