int main() { install_sigsegv_handler(); if (sigsetjmp(stack_overflow_guard, 0) == 0) { printf("normal path, got: %d\n", trigger_stack_overflow(0, 0, 0, 0, 0)); } else { printf("stack overflow\n"); } return EXIT_SUCCESS; }
int main(int argc UNUSED, char **argv) { unw_addr_space_t as; struct UCD_info *ui; unw_cursor_t c; int ret; #define TEST_FRAMES 4 #define TEST_NAME_LEN 32 int testcase = 0; int test_cur = 0; long test_start_ips[TEST_FRAMES]; char test_names[TEST_FRAMES][TEST_NAME_LEN]; install_sigsegv_handler(); const char *progname = strrchr(argv[0], '/'); if (progname) progname++; else progname = argv[0]; if (!argv[1]) error_msg_and_die("Usage: %s COREDUMP [VADDR:BINARY_FILE]...", progname); msg_prefix = progname; as = unw_create_addr_space(&_UCD_accessors, 0); if (!as) error_msg_and_die("unw_create_addr_space() failed"); ui = _UCD_create(argv[1]); if (!ui) error_msg_and_die("_UCD_create('%s') failed", argv[1]); ret = unw_init_remote(&c, as, ui); if (ret < 0) error_msg_and_die("unw_init_remote() failed: ret=%d\n", ret); argv += 2; /* Enable checks for the crasher test program? */ if (*argv && !strcmp(*argv, "-testcase")) { testcase = 1; logmode = LOGMODE_NONE; argv++; } while (*argv) { char *colon; unsigned long vaddr = strtoul(*argv, &colon, 16); if (*colon != ':') error_msg_and_die("Bad format: '%s'", *argv); if (_UCD_add_backing_file_at_vaddr(ui, vaddr, colon + 1) < 0) error_msg_and_die("Can't add backing file '%s'", colon + 1); argv++; } for (;;) { unw_word_t ip; ret = unw_get_reg(&c, UNW_REG_IP, &ip); if (ret < 0) error_msg_and_die("unw_get_reg(UNW_REG_IP) failed: ret=%d\n", ret); unw_proc_info_t pi; ret = unw_get_proc_info(&c, &pi); if (ret < 0) error_msg_and_die("unw_get_proc_info(ip=0x%lx) failed: ret=%d\n", (long) ip, ret); if (!testcase) printf("\tip=0x%08lx proc=%08lx-%08lx handler=0x%08lx lsda=0x%08lx\n", (long) ip, (long) pi.start_ip, (long) pi.end_ip, (long) pi.handler, (long) pi.lsda); if (testcase && test_cur < TEST_FRAMES) { unw_word_t off; test_start_ips[test_cur] = (long) pi.start_ip; if (unw_get_proc_name(&c, test_names[test_cur], sizeof(test_names[0]), &off) != 0) { test_names[test_cur][0] = '\0'; } test_cur++; } log("step"); ret = unw_step(&c); log("step done:%d", ret); if (ret < 0) error_msg_and_die("FAILURE: unw_step() returned %d", ret); if (ret == 0) break; } log("stepping ended"); /* Check that the second and third frames are equal, but distinct of the * others */ if (testcase && (test_cur != 4 || test_start_ips[1] != test_start_ips[2] || test_start_ips[0] == test_start_ips[1] || test_start_ips[2] == test_start_ips[3] ) ) { fprintf(stderr, "FAILURE: start IPs incorrect\n"); return -1; } if (testcase && ( strcmp(test_names[0], "a") || strcmp(test_names[1], "b") || strcmp(test_names[2], "b") || strcmp(test_names[3], "main") ) ) { fprintf(stderr, "FAILURE: procedure names are missing/incorrect\n"); return -1; } _UCD_destroy(ui); unw_destroy_addr_space(as); return 0; }