[Bug c++/80089] New: ICE: Segfault with openMP and a string

["agadethrowaway at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80089

            Bug ID: 80089
           Summary: ICE: Segfault with openMP and a string
           Product: gcc
           Version: 5.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: agadethrowaway at gmail dot com
  Target Milestone: ---

Created attachment 40998
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40998&action=edit
Code to reproduce + .ii file

Version:
g++ (Ubuntu 5.4.1-2ubuntu1~16.04) 5.4.1 20160904

System:
Linux mint 18.1

Minimal code:
#include <iostream>
int main(){
        std::string s="";
        #pragma omp parallel
        while(true){}
}

Compile line:
g++ ICE.cpp -O3 -fopenmp

Output:
ICE.cpp: In function ‘int main()’:
ICE.cpp:6:1: internal compiler error: Segmentation fault
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
Makefile:2: recipe for target 'all' failed
make: *** [all] Error 1

I believe these are the compilation options ubuntu uses:
Configured with: -v
         --with-pkgversion='Ubuntu 5.4.1-8ubuntu1'
         --with-bugurl='file:///usr/share/doc/gcc-5/README.Bugs'
         --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++
         --prefix=/usr
         --program-suffix=-5
         --enable-shared
         --enable-linker-build-id
         --libexecdir=/usr/lib
         --without-included-gettext
         --enable-threads=posix
         --libdir=/usr/lib
         --enable-nls
         --with-sysroot=/
         --enable-clocale=gnu
         --enable-libstdcxx-debug
         --enable-libstdcxx-time=yes
         --with-default-libstdcxx-abi=new
         --enable-gnu-unique-object
         --disable-vtable-verify
         --enable-libmpx
         --enable-plugin
         --enable-default-pie
         --with-system-zlib
         --disable-browser-plugin
         --enable-java-awt=gtk
         --enable-gtk-cairo
         --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre
         --enable-java-home
         --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
         --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
         --with-arch-directory=amd64
         --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
         --enable-objc-gc
         --enable-multiarch
         --disable-werror
         --with-arch-32=i686
         --with-abi=m64
         --with-multilib-list=m32,m64,mx32
         --enable-multilib
         --with-tune=generic
         --enable-checking=release
         --build=x86_64-linux-gnu
         --host=x86_64-linux-gnu
         --target=x86_64-linux-gnu

It seems to be a regression in gcc 5 through to gcc 6.2 and gone in gcc 6.3.
Included are the .cpp and .ii files in a .tar.gz.