Bug path

pl
‘pl’: events 1-5
21 for (sc = 0; sc < 1; ++sc)
~~~^~~
|
(1) following ‘true’ branch (when ‘sc <= 0’)...
22 {
23 th.gk.hk = 0;
~~~~~~~~~~~~
|
(2) ...to here
24 th.gk.bg[sc] = 0; /* { dg-warning "dereference of NULL '0'" } */
~~~~~~~~~~~~~~~~
| | |
| | (5) dereference of NULL ‘<unknown>’
| (4) ‘0’ is NULL
(3) ‘0’ is NULL