Public bug reported:

Distributor ID: neon
Description:    KDE neon User Edition 5.9
Release:        16.04
Codename:       xenial
Linux neon 4.4.0-62-generic #83-Ubuntu SMP Wed Jan 18 14:10:15 UTC 2017 x86_64 
x86_64 x86_64 GNU/Linux

Package: gcc
Version: 4:5.3.1-1ubuntu1

Package: make
Version: 4.1-6

To reproduce:
In a live session, download hashcat source - https://github.com/hashcat/hashcat
Requires opencl-headers (install through apt)
Run make in the hashcat-master dir.

Outputs gcc compiler flags, then after about 5 - 10 seconds, the system
completely freezes up. Mouse becomes unusable, audio starts looping if
playing in background. Requires REISUB to reboot if frozen.

Reproduced on two different laptops, and on a Mint 18.1 live session.
Also encountered when trying to compile an Excel import package for
RStudio, so I think this issue probably affects most instances of the
current gcc version under certain conditions.

** Affects: gcc-5 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: xenial

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https://bugs.launchpad.net/bugs/1665246

Title:
  System Completely Hangs When Compiling Certain Packages

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