[PATCH] libstdc++: Implement C++20 features for <sstream>

[Rainer Orth]

Hi Jonathan,

> On > The patch that was committed broke the linker script. The attached
> patch restores the piece that got lost, and removes the duplicate
> patterns added for the new symbols. Pushed to trunk.

even this fixed version broke Solaris bootstrap:

ld: fatal: libstdc++-symbols.ver-sun: 7318: symbol '_ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE13get_allocatorEv': symbol version conflict
ld: fatal: libstdc++-symbols.ver-sun: 7319: symbol '_ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE13get_allocatorEv': symbol version conflict

  matched by

    ##_ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE13get_allocatorEv (glob)
    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE13get_allocatorEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE13get_allocatorEv;

  and

    ##_ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE[0-35-9]* (glob)

  which matches

    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE13get_allocatorEv;
    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE3strEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE13get_allocatorEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE3strEv;

ld: fatal: libstdc++-symbols.ver-sun: 7321: symbol '_ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE4viewEv': symbol version conflict
ld: fatal: libstdc++-symbols.ver-sun: 7322: symbol '_ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE4viewEv': symbol version conflict

  matched by

    ##_ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv (glob)
    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE4viewEv;

  and

    ##_ZNKSt7__cxx1115basic_stringbuf* (glob)

  which matches

    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE13get_allocatorEv;
    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE3strEv;
    _ZNKSt7__cxx1115basic_stringbufIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE13get_allocatorEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE3strEv;
    _ZNKSt7__cxx1115basic_stringbufIwSt11char_traitsIwESaIwEE4viewEv;

ld: fatal: libstdc++-symbols.ver-sun: 7342: symbol '_ZNKSt7__cxx1119basic_istringstreamIcSt11char_traitsIcESaIcEE4viewEv': symbol version conflict
ld: fatal: libstdc++-symbols.ver-sun: 7343: symbol '_ZNKSt7__cxx1119basic_istringstreamIwSt11char_traitsIwESaIwEE4viewEv': symbol version conflict

  matched by

    ##_ZNKSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv (glob)
    _ZNKSt7__cxx1119basic_istringstreamIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1119basic_istringstreamIwSt11char_traitsIwESaIwEE4viewEv;
    _ZNKSt7__cxx1119basic_ostringstreamIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1119basic_ostringstreamIwSt11char_traitsIwESaIwEE4viewEv;

  and

    ##_ZNKSt7__cxx1119basic_istringstream* (glob)
    ##_ZNKSt7__cxx1119basic_ostringstream* (glob)

  which match

    _ZNKSt7__cxx1119basic_istringstreamIcSt11char_traitsIcESaIcEE3strEv;
    _ZNKSt7__cxx1119basic_istringstreamIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1119basic_istringstreamIcSt11char_traitsIcESaIcEE5rdbufEv;
    _ZNKSt7__cxx1119basic_istringstreamIwSt11char_traitsIwESaIwEE3strEv;
    _ZNKSt7__cxx1119basic_istringstreamIwSt11char_traitsIwESaIwEE4viewEv;
    _ZNKSt7__cxx1119basic_istringstreamIwSt11char_traitsIwESaIwEE5rdbufEv;
    _ZNKSt7__cxx1119basic_ostringstreamIcSt11char_traitsIcESaIcEE3strEv;
    _ZNKSt7__cxx1119basic_ostringstreamIcSt11char_traitsIcESaIcEE4viewEv;
    _ZNKSt7__cxx1119basic_ostringstreamIcSt11char_traitsIcESaIcEE5rdbufEv;
    _ZNKSt7__cxx1119basic_ostringstreamIwSt11char_traitsIwESaIwEE3strEv;
    _ZNKSt7__cxx1119basic_ostringstreamIwSt11char_traitsIwESaIwEE4viewEv;
    _ZNKSt7__cxx1119basic_ostringstreamIwSt11char_traitsIwESaIwEE5rdbufEv;

Tightening the patterns as in the attached patch at least allows
libstdc++.so.6 to link on i386-pc-solaris2.11; full bootstrap still
running.  However, I can't tell if this is really correct.

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


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