[Bug c++/70977] New: Error during compilation of facebook/wangle (flag c++0x works, flag c++14 fails).

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70977

            Bug ID: 70977
           Summary: Error during compilation of facebook/wangle (flag
                    c++0x works, flag c++14 fails).
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: aleksandergajewski at gmail dot com
  Target Milestone: ---

GCC version as follows: (nothing but svn checkout release_6_1.. && ./configure
--prefix=/usr && make && make install):
adiog@box:~/dev/wangle/build-6.1$ c++ --version
c++ (GCC) 6.1.0
Copyright (C) 2016 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.

The problem should be easy to reproduce (compilation fails on first file in a
project). I have compiled https://github.com/facebook/wangle, but with changed
flag from -std=c++0x to -std=c++14. In first case compilation terminates after
few seconds, in second one there is a gcc internal error (after few minutes
with whole ram 4gb and whole swap consumed). htop does not show any cpu usage.


adiog@box:~/dev/wangle/build-6.1$ time /usr/bin/c++   
-I/home/adiog/dev/wangle/.. -I/usr/local/include
-I/home/adiog/dev/wangle/gmock/src/gmock/include
-I/home/adiog/dev/wangle/gmock/src/gmock/gtest/include  -std=c++0x -fPIC   -o
CMakeFiles/wangle.dir/acceptor/Acceptor.cpp.o -c
/home/adiog/dev/wangle/acceptor/Acceptor.cpp

real    0m6.311s
user    0m6.036s
sys     0m0.256s

adiog@box:~/dev/wangle/build-6.1$ time /usr/bin/c++   
-I/home/adiog/dev/wangle/.. -I/usr/local/include
-I/home/adiog/dev/wangle/gmock/src/gmock/include
-I/home/adiog/dev/wangle/gmock/src/gmock/gtest/include  -std=c++14 -fPIC   -o
CMakeFiles/wangle.dir/acceptor/Acceptor.cpp.o -c
/home/adiog/dev/wangle/acceptor/Acceptor.cpp
c++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

real    3m41.641s
user    1m5.628s
sys     0m5.684s