if (wait_process(pid, &status, 0) < 0
|| !WIFEXITED(status) || WEXITSTATUS(status) != 0) {
char *e;
- if (asprintf(&e, "pre-xfer exec returned failure (%d)\n", status) < 0)
+ if (asprintf(&e, "pre-xfer exec returned failure (%d)%s%s\n",
+ status, status < 0 ? ": " : "",
+ status < 0 ? strerror(errno) : "") < 0)
out_of_memory("finish_pre_exec");
return e;
}