diff -r 089a4431e615 Modules/posixmodule.c
--- a/Modules/posixmodule.c	Sat Jan 01 15:30:24 2011 +0100
+++ b/Modules/posixmodule.c	Sun Jan 02 10:21:14 2011 +0100
@@ -7295,6 +7295,9 @@
                    "tempnam is a potential security risk to your program") < 0)
         return NULL;
 
+    if (PyErr_WarnPy3k("tempnam has been removed in 3.0", 1) < 0)
+	    return NULL;
+
 #ifdef MS_WINDOWS
     name = _tempnam(dir, pfx);
 #else
@@ -7319,6 +7322,9 @@
 {
     FILE *fp;
 
+    if (PyErr_WarnPy3k("tmpfile has been removed in 3.0", 1) < 0)
+	    return NULL;
+
     fp = tmpfile();
     if (fp == NULL)
     return posix_error();
@@ -7342,6 +7348,9 @@
                    "tmpnam is a potential security risk to your program") < 0)
         return NULL;
 
+    if (PyErr_WarnPy3k("tmpnam has been removed in 3.0", 1) < 0)
+	    return NULL;
+
 #ifdef USE_TMPNAM_R
     name = tmpnam_r(buffer);
 #else