Boost C++ Libraries: Ticket #6441: lexical_cast uses non existing std::basic_stringstream::pptr when compiling with -DBOOST_NO_STD_LOCALE

attachment set

leutloff@… — Mon, 23 Jan 2012 21:21:29 GMT

attachment → error-trunk.log

owner changed

John Maddock — Sun, 29 Jan 2012 17:58:12 GMT

owner changed from nasonov to Antony Polukhin

Antony Polukhin — Mon, 30 Jan 2012 17:18:44 GMT

I`ve successfully compiled and run some tests with all combinations of flags BOOST_NO_STRINGSTREAM and BOOST_NO_STD_LOCALE. No errors. I used gcc-4.6.1, just as you did.

Looks like you have bad installation of GCCs STL headers.

Please support more info, so I could reproduce this bug.

leutloff@… — Sun, 05 Feb 2012 19:38:33 GMT

Hmm, I am puzzled.

Here are some more information. I am trying to build on two different 64 bit systems. An up to date Ubuntu and a legacy Debian Lenny system. The legacy Debian system is the reason to use BOOST_NO_STD_LOCALE. But this old system is unfortunately my target system 8-(

Okay, here are my findings, starting with the Ubuntu system (Ubuntu 11.10 (GNU/Linux 3.0.0-16-generic x86_64)):

Compiling svn trunk (revision r76903, 2012-02-05):

cd boost-trunk
(./bootstrap.sh)
./b2 clean
./b2 toolset=gcc cxxflags=-DBOOST_NO_STD_LOCALE --with-test stage

GCC version (gcc --version):

gcc (Ubuntu/Linaro 4.6.1-9ubuntu3) 4.6.1

These are the installed STL headers (dpkg -l '*stdc++*-dev'):

libstdc++6-4.6-dev, 4.6.1-9ubuntu3, GNU Standard C++ Library v3 (development files)

This is the only installed libstdc++. (There was an old one installed, but I have removed it and tried again.)

Now switching to ancient Debian Lenny system. But the outcome is the same.

Executing again:

./b2 clean
./b2 toolset=gcc cxxflags=-DBOOST_NO_STD_LOCALE --with-test stage

GCC version (gcc --version):

gcc (Debian 4.3.2-1.1) 4.3.2

These are the installed STL headers (dpkg -l '*stdc++*-dev'):

libstdc++6-4.3-dev, 4.3.2-1.1

I have no idea what the problem is. So I searched the web for char_type unexpected differences on 32 and 64 bit systems. I have included sstream in libs/test/src/logged_expectations.cpp, but nothing changed (on the Ubuntu system). Any pointers to solve this behavior are greatly appreciated.

Antony Polukhin — Mon, 06 Feb 2012 16:24:50 GMT

Replying to leutloff@…:

Here are some more information. I am trying to build on two different 64 bit systems. An up to date Ubuntu and a legacy Debian Lenny system. The legacy Debian system is the reason to use BOOST_NO_STD_LOCALE. But this old system is unfortunately my target system 8-(

BOOST_NO_STD_LOCALE is an internal define, that describes STL library defects. It must be set up by boost/config.hpp. I don`t think that BOOST_NO_STD_LOCALE is meant to be used this way.

Why are you explicitly specifying it?

leutloff@… — Tue, 07 Feb 2012 13:30:10 GMT

Why are you explicitly specifying it?

std::locale("") throws an exception on the old system (libstdc++6, 4.3.2). Therefore I must ensure that locale is not instantiated. Defining BOOST_NO_STD_LOCALE avoided the exception for some of the boost libraries I am using (I suppose it was thread and regex). I have read that defining BOOST_NO_STD_LOCALE is the correct way to avoid the std::locale instantiation. But I can not find the documents for reference at the moment 8-(

status, milestone changed; cc set

Antony Polukhin — Tue, 07 Feb 2012 17:08:52 GMT

cc antoshkka@… added
status new → assigned
milestone To Be Determined → Boost 1.50.0

I`ve reproduced the error.
Thanks for bug report and additional info!

status changed; resolution set

Antony Polukhin — Mon, 20 Feb 2012 16:20:11 GMT

status assigned → closed
resolution → fixed

(In [77077]) Fixes #6441 (compilation error with BOOST_NO_STD_LOCALE defined)

Antony Polukhin — Mon, 20 Feb 2012 16:25:46 GMT

Now it compiles with BOOST_NO_STD_LOCALE, but I think that your error can occur at any time: all the STL streams use std::locale. May be a better solution in your case would be to update GCC.

leutloff@… — Mon, 20 Feb 2012 21:45:31 GMT

Thanks a lot for fixing this issue! I wish I could change GCC - I would have done it instead of writing this issue - BUT there is no way for me to change it 8-(

Antony Polukhin — Sat, 25 Feb 2012 17:32:28 GMT

(In [77117]) Update for fixed #6441 (unable to compile lexical_cast with BOOST_NO_STD_LOCALE defined) Now test must compile under VC, removed some warnings.