Hija,
this program crashes SEGV on stable/13 after 135962 iterations, but continues to run on 12.3. My stable/13 is still at 22ba2970766 - if You happen to be on a newer level, then please just try this out. ------------------------------------------------------ #include <unistd.h> #include <fcntl.h> #include <stdio.h> main() { char buf[] = "12345678901234567890123456789012345678901234567890"; int fd = open("/dev/null", O_RDONLY); int i = 0; close(1); dup2(fd, 1); close(fd); while(1) { fputs(buf, stdout); fflush(stdout); i++; fprintf(stderr, "%d\n", i); } } ------------------------------------------------------ I know that the code is bogus, but this is exactly what one of our ports does (and why it started to crash after upgrading to stable/13). And I think it should not SEGV, anyway. For the full story, read here: https://forums.freebsd.org/threads/random-program-crashes-no-coredumps-and-error-94.84285/