The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.

Severity: Low
More Information:

Namespace: debian:10
Feature: gcc-8
Feature Version: 8.3.0-6
Fixed By Version:
Ignore by gdivis@inedo.local on 9/16/2020 9:47:56 AM
12/15/2020 8:47:56 AM (90 days from assessment)