[Bug 1728809] [NEW] g++ keeps crashing on code that used be fine

[Grizzly(Francis Smit)]

Public bug reported:

heres what it spits out 
  CXX      mainwin.o
In file included from /usr/include/unistd.h:1167:0,
                 from /usr/include/glib-2.0/gio/gcredentials.h:32,
                 from /usr/include/glib-2.0/gio/gio.h:46,
                 from /usr/include/giomm-2.4/giomm/action.h:31,
                 from /usr/include/giomm-2.4/giomm.h:24,
                 from /usr/include/gtkmm-3.0/gtkmm.h:88,
                 from mainwin.h:23,
                 from mainwin.cc:20:
/usr/include/x86_64-linux-gnu/bits/unistd.h:156:37: internal compiler error: Segmentation fault
      char *__restrict __buf, size_t __len,
                                     ^~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
Makefile:538: recipe for target 'mainwin.o' failed
make[2]: *** [mainwin.o] Error 1
make[2]: Leaving directory '/home/grizzlysmit/Projects/xmms2/cathy/src'
Makefile:506: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/grizzlysmit/Projects/xmms2/cathy'
Makefile:417: recipe for target 'all' failed
make: *** [all] Error 2
17:50:47 grizzlysmit at rakbat:~/Projects/xmms2/cathy master(+2389/-1917)* 4s 2 ± g++ --version
g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0
Copyright (C) 2017 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: g++ 4:7.2.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 31 17:52:01 2017
InstallationDate: Installed on 2017-10-30 (1 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: gcc-defaults
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: amd64 apport-bug artful wayland-session

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https://bugs.launchpad.net/bugs/1728809

Title:
  g++ keeps crashing on code that used be fine

Status in gcc-defaults package in Ubuntu:
  New

Bug description:
  heres what it spits out 
    CXX      mainwin.o
  In file included from /usr/include/unistd.h:1167:0,
                   from /usr/include/glib-2.0/gio/gcredentials.h:32,
                   from /usr/include/glib-2.0/gio/gio.h:46,
                   from /usr/include/giomm-2.4/giomm/action.h:31,
                   from /usr/include/giomm-2.4/giomm.h:24,
                   from /usr/include/gtkmm-3.0/gtkmm.h:88,
                   from mainwin.h:23,
                   from mainwin.cc:20:
  /usr/include/x86_64-linux-gnu/bits/unistd.h:156:37: internal compiler error: Segmentation fault
        char *__restrict __buf, size_t __len,
                                       ^~~~~
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
  Makefile:538: recipe for target 'mainwin.o' failed
  make[2]: *** [mainwin.o] Error 1
  make[2]: Leaving directory '/home/grizzlysmit/Projects/xmms2/cathy/src'
  Makefile:506: recipe for target 'all-recursive' failed
  make[1]: *** [all-recursive] Error 1
  make[1]: Leaving directory '/home/grizzlysmit/Projects/xmms2/cathy'
  Makefile:417: recipe for target 'all' failed
  make: *** [all] Error 2
  17:50:47 grizzlysmit at rakbat:~/Projects/xmms2/cathy master(+2389/-1917)* 4s 2 ± g++ --version
  g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0
  Copyright (C) 2017 Free Software Foundation, Inc.
  This is free software; see the source for copying conditions.  There is NO
  warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: g++ 4:7.2.0-1ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.1
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Oct 31 17:52:01 2017
  InstallationDate: Installed on 2017-10-30 (1 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  SourcePackage: gcc-defaults
  UpgradeStatus: No upgrade log present (probably fresh install)

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