-static void
-backtrace_and_maps (int do_abort, bool written, int fd)
-{
- if (do_abort > 1 && written)
- {
- void *addrs[64];
-#define naddrs (sizeof (addrs) / sizeof (addrs[0]))
- int n = __backtrace (addrs, naddrs);
- if (n > 2)
- {
-#define strnsize(str) str, strlen (str)
-#define writestr(str) __write_nocancel (fd, str)
- writestr (strnsize ("======= Backtrace: =========\n"));
- __backtrace_symbols_fd (addrs + 1, n - 1, fd);
-
- writestr (strnsize ("======= Memory map: ========\n"));
- int fd2 = __open_nocancel ("/proc/self/maps", O_RDONLY);
- char buf[1024];
- ssize_t n2;
- while ((n2 = __read_nocancel (fd2, buf, sizeof (buf))) > 0)
- if (__write_nocancel (fd, buf, n2) != n2)
- break;
- __close_nocancel_nostatus (fd2);
- }
- }
-}
-#define BEFORE_ABORT backtrace_and_maps
-