[Bug 1751199] [NEW] g++-5 fails to compile c++11 code with -std=c++11 on Ubuntu 17.10

[Abhishek]

Public bug reported:

How to reproduce:
=================

1. Install g++-5 with `sudo apt install g++-5`
2. Try compiling the following C++11 code:

cat << END > a.cpp
#include <iostream>
#include <string>
int main()
{ std::cout<<std::stoi("1234"); return 0; }
END
g++-5 -std=c++11 a.cpp

3. What happened: Fails with error:

a.cpp: In function ‘int main()’:
a.cpp:4:17: error: ‘stoi’ is not a member of ‘std’
    { std::cout<<std::stoi("1234"); return 0; }
                 ^

4. What is expected: No error.  Successful compilation.

Version information:
====================
lsb_release -rd
Description:	Ubuntu 17.10
Release:	17.10

g++-5 --version
g++-5 (Ubuntu 5.5.0-1ubuntu2) 5.4.1 20171010


Additional comments:
====================
I tested the same code in Ubuntu 16.04 with g++-5 (g++-5 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609) and it compiles fine on it.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: g++-5 5.5.0-1ubuntu2
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Feb 23 11:19:16 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-01-02 (51 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: gcc-5
UpgradeStatus: No upgrade log present (probably fresh install)

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


** Tags: artful

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https://bugs.launchpad.net/bugs/1751199

Title:
  g++-5 fails to compile c++11 code with -std=c++11 on Ubuntu 17.10

Status in gcc-5 package in Ubuntu:
  New

Bug description:
  How to reproduce:
  =================

  1. Install g++-5 with `sudo apt install g++-5`
  2. Try compiling the following C++11 code:

  cat << END > a.cpp
  #include <iostream>
  #include <string>
  int main()
  { std::cout<<std::stoi("1234"); return 0; }
  END
  g++-5 -std=c++11 a.cpp

  3. What happened: Fails with error:

  a.cpp: In function ‘int main()’:
  a.cpp:4:17: error: ‘stoi’ is not a member of ‘std’
      { std::cout<<std::stoi("1234"); return 0; }
                   ^

  4. What is expected: No error.  Successful compilation.

  Version information:
  ====================
  lsb_release -rd
  Description:	Ubuntu 17.10
  Release:	17.10

  g++-5 --version
  g++-5 (Ubuntu 5.5.0-1ubuntu2) 5.4.1 20171010

  
  Additional comments:
  ====================
  I tested the same code in Ubuntu 16.04 with g++-5 (g++-5 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609) and it compiles fine on it.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: g++-5 5.5.0-1ubuntu2
  ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
  Uname: Linux 4.13.0-32-generic x86_64
  ApportVersion: 2.20.7-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Feb 23 11:19:16 2018
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2018-01-02 (51 days ago)
  InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
  SourcePackage: gcc-5
  UpgradeStatus: No upgrade log present (probably fresh install)

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