diff -r 6a2f74811240 Modules/pwdmodule.c
--- a/Modules/pwdmodule.c	Thu Oct 23 23:03:35 2014 +0200
+++ b/Modules/pwdmodule.c	Fri Oct 24 17:36:57 2014 -0500
@@ -79,7 +79,12 @@
     SETS(setIndex++, p->pw_passwd);
     PyStructSequence_SET_ITEM(v, setIndex++, _PyLong_FromUid(p->pw_uid));
     PyStructSequence_SET_ITEM(v, setIndex++, _PyLong_FromGid(p->pw_gid));
+#if defined(HAVE_PASSWD_GECOS_FIELD)
     SETS(setIndex++, p->pw_gecos);
+#else
+    SETS(setIndex++, Py_None);
+    Py_INCREF(Py_None);
+#endif
     SETS(setIndex++, p->pw_dir);
     SETS(setIndex++, p->pw_shell);
 
diff -r 6a2f74811240 configure
diff -r 6a2f74811240 configure.ac
--- a/configure.ac	Thu Oct 23 23:03:35 2014 +0200
+++ b/configure.ac	Fri Oct 24 17:36:57 2014 -0500
@@ -4892,6 +4892,11 @@
 AC_MSG_RESULT($ENSUREPIP)
 AC_SUBST(ENSUREPIP)
 
+AC_CHECK_MEMBER([struct passwd.pw_gecos],
+          [AC_DEFINE(HAVE_PASSWD_GECOS_FIELD, 1, [Define if <pwd.h> defines field passwd.pw_gecos])],
+          [],
+          [[#include <pwd.h>]])
+
 # generate output files
 AC_CONFIG_FILES(Makefile.pre Modules/Setup.config Misc/python.pc Misc/python-config.sh)
 AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix])