bpo-32374 added a new subtest (test_bad_traverse) in test_importlib. The test succeeds when a script calling a bad_traverse exits with a non-zero status (e.g., crashes because of segmentation violation)

This patch "fixes" Modules/_testmultiphase.c so that it exits with a non-zero status when a NULL pointer is accessed. This is what was causing other systems to 'crash' expectedly - while AIX was not.

A simple demo program to demonstrate the difference behavior of AIX:

/*
 * Program to show whether an executable crashes, or not
 * when a NULL pointer is accessed
 * Author: AIXTOOLS
 */

#include<stdio.h>
main()
{
        long *vpt = NULL;

    fprintf(stdout, "vpt = %08lx\n", (long) vpt);
    if (*vpt)
            fprintf(stdout,"True\n");
    else
            fprintf(stdout,"False\n");

}

On AIX:
root@x066:[/data/prj/python/git]make nullpr; ./nullpr
cc nullpr.c -o nullpr
vpt = 0000000
False

On a Linux server:
root@x074:/data/prj/python/git# rm nullpr; make nullpr; ./nullpr
make: Warning: File 'nullpr.c' has modification time 352 s in the future
cc nullpr.c -o nullpr
nullpr.c:8:1: warning: return type defaults to 'int' [-Wimplicit-int]
main()
^
make: warning: Clock skew detected. Your build may be incomplete.
vpt = 0000000
Segmentation fault

New changeset 1bf8845 by Miss Islington (bot) (Michael Felt) in branch 'master':
bpo-34720: Fix test_importlib.test_bad_traverse for AIX (GH-9391)
1bf8845

Could this also be backported to 3.6 and 3.7 please?

could this be backported to versions 3.7, and if applicable, to version 3.6

On 10/03/2019 19:31, Michael Felt wrote:

Michael Felt <aixtools@felt.demon.nl> added the comment:

could this be backported to versions 3.7, and if applicable, to version 3.6
Only 3.7 - As 3.6 is in security mode.

----------

---

Python tracker <report@bugs.python.org>
<https://bugs.python.org/issue34720\>

---

New changeset 61f34f9 by Ned Deily (Michael Felt) in branch '3.7':
bpo-34720: Fix test_importlib.test_bad_traverse for AIX (GH-14238)
61f34f9