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https://issues.apache.org/jira/browse/STDCXX-367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12602800#action_12602800
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Travis Vitek commented on STDCXX-367:
-------------------------------------
The templates are being explicitly instantiated. The basic_istream<char>
symbols are all in the lib. If I preprocess {{ti_ostream.cpp}} I see the
following code...
{noformat}
namespace std {
template class basic_istream<char, char_traits<char> >;
}
{noformat}
I do see some conditional code in rw/_defs.h that disables explicit
instantation to avoid an ICE with XLC++ 8.0. This is only enabled under very
specific conditions and would not have an impact on other versions of the
compiler.
> [XLC++ 7.0, 8.0, 9.0] warning 1540-0183 on explicit instantiation
> -----------------------------------------------------------------
>
> Key: STDCXX-367
> URL: https://issues.apache.org/jira/browse/STDCXX-367
> Project: C++ Standard Library
> Issue Type: Bug
> Components: Build
> Affects Versions: 4.1.3
> Environment: IBM XLC++ 7.0, 8.0, 9.0
> Reporter: Martin Sebor
> Assignee: Travis Vitek
> Priority: Minor
> Fix For: 4.2.2
>
>
> Compiling stdcxx 4.1.3 with XLC++ 7.0 on AIX produces many warnings like the
> ones below:
> xlCcore -c -I/amd/devco/sebor/stdcxx-4.1.3/include/ansi -D_RWSTDDEBUG
> -D_RWSTD_USE_CONFIG -I/build/sebor/stdcxx-4.1.3-xlc-7.0.0.9-11s/include
> -I/amd/devco/sebor/stdcxx-4.1.3/include -g -qtemplateregistry=repository.ti
> /amd/devco/sebor/stdcxx-4.1.3/src/ti_istream.cpp
> "/amd/devco/sebor/stdcxx-4.1.3/include/istream", line 580.23: 1540-0183 (W)
> The explicit instantiation "basic_istream<char,std::char_traits<char> >"
> should either be explictly qualified or be declared in the namespace
> containing the template.
> "/amd/devco/sebor/stdcxx-4.1.3/include/istream", line 580.23: 1540-0183 (W)
> The explicit instantiation "basic_istream<char,std::char_traits<char> >"
> should either be explictly qualified or be declared in the namespace
> containing the template.
> "/amd/devco/sebor/stdcxx-4.1.3/include/istream", line 153.16: 1540-0700 (I)
> The previous message was produced while processing
> "__rw::__rw_extract<char,std::char_traits<char>,bool>(basic_istream<char,std::char_traits<char>
> > &, bool &)".
> "/amd/devco/sebor/stdcxx-4.1.3/include/istream", line 152.20: 1540-0700 (I)
> The previous message was produced while processing
> "std::basic_istream<char,std::char_traits<char> >::operator>>(bool &)".
> "/amd/devco/sebor/stdcxx-4.1.3/include/istream", line 82.7: 1540-0700 (I) The
> previous message was produced while processing "class
> std::basic_istream<char,std::char_traits<char> >".
> ...
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