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| author | Ulrich Drepper <drepper@gmail.com> | 2010-10-11 09:38:00 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2010-10-11 09:38:00 -0400 |
| commit | 1751705d1c4e8b7aba391391d1d8d88fe8c9d8b8 (patch) | |
| tree | c335539bce3bce8bfb30274a4d820595b98e0bb1 /sysdeps/unix/sysv/linux/check_pf.c | |
| parent | 9ff8d36f27aaf390fd074976cd2e867ba41f2588 (diff) | |
| download | glibc-1751705d1c4e8b7aba391391d1d8d88fe8c9d8b8.tar.gz glibc-1751705d1c4e8b7aba391391d1d8d88fe8c9d8b8.tar.xz glibc-1751705d1c4e8b7aba391391d1d8d88fe8c9d8b8.zip | |
Linux getifaddrs might return entries with ->ifa_addr being NULL.
Diffstat (limited to 'sysdeps/unix/sysv/linux/check_pf.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/check_pf.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/check_pf.c b/sysdeps/unix/sysv/linux/check_pf.c index e694342998..b789a32eab 100644 --- a/sysdeps/unix/sysv/linux/check_pf.c +++ b/sysdeps/unix/sysv/linux/check_pf.c @@ -1,5 +1,5 @@ /* Determine protocol families for which interfaces exist. Linux version. - Copyright (C) 2003, 2006, 2007, 2008 Free Software Foundation, Inc. + Copyright (C) 2003, 2006, 2007, 2008, 2010 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -304,10 +304,13 @@ __check_pf (bool *seen_ipv4, bool *seen_ipv6, struct ifaddrs *runp; for (runp = ifa; runp != NULL; runp = runp->ifa_next) - if (runp->ifa_addr->sa_family == PF_INET) - *seen_ipv4 = true; - else if (runp->ifa_addr->sa_family == PF_INET6) - *seen_ipv6 = true; + if (runp->ifa_addr != NULL) + { + if (runp->ifa_addr->sa_family == PF_INET) + *seen_ipv4 = true; + else if (runp->ifa_addr->sa_family == PF_INET6) + *seen_ipv6 = true; + } (void) freeifaddrs (ifa); #endif |