libstdc++-4.8-dev:amd64 4.8.5-4ubuntu6 configured without _GLIBCXX_USE_C99

[Andrew Paxie]

Test program compiled on Artful Aardvark Ubuntu 17.10.

$ which g++-4.8
/usr/bin/g++-4.8

$ /usr/bin/g++-4.8 --version
g++-4.8 (Ubuntu 4.8.5-4ubuntu6) 4.8.5
Copyright (C) 2015 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.

$ /usr/bin/g++-4.8 -std=c++11 -x c++ - <<EOF
#include <iostream>
#include <string>
int main()
{
  std::cout << std::to_string(0) << '\n';
  return 0;
}
EOF

Expected result

compile without errors, output 0

Actual result

<stdin>: In function ‘int main()’:
<stdin>:5:16: error: ‘to_string’ is not a member of ‘std’

Supposed cause

_GLIBCXX_USE_C99 is not set in
/usr/include/x86_64-linux-gnu/c++/4.8/bits/c++config.h
in package libstdc++-4.8-dev:amd64 (4.8.5-4ubuntu6)

Further information

Test program compiles and runs on Zesty Zapus with package
libstdc++-4.8-dev:amd64 (4.8.5-4ubuntu4).

[Matthias Klose (doko)]

won't fix in gcc-4.8

[Andrew Paxie (andrewpaxie)]

Ah, I get it now.

g++-4.8 is part of universe in artful, meaning "Community supported",
not officially supported by Canonical.

[David Welch (davidwelch158)]

This bug is related to https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1725869 (and https://sourceware.org/bugzilla/show_bug.cgi?id=22296). If gcc-4 is rebuilt with a version of glibc with that bug fixed then this one is fixed too.