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From: "octoploid at yandex dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/59083] -fisolate-erroneous-paths produces illegal instruction with enabled -fprofile-generate
Date: Wed, 13 Nov 2013 09:08:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59083

--- Comment #14 from Markus Trippelsdorf <octoploid at yandex dot com> ---
The 'kernel' case passes a NULL pointer to qsort:

 % < test.i
struct relocs {
  int *offset;
};
static struct relocs a;
void qsort(void *, int) __attribute__((__nonnull__));
void die(int *p1, ...) {}

void sort_relocs(struct relocs *p1) { qsort(p1->offset, 0); }

int main() {
  sort_relocs(&a);
  return 0;
}