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Correct instantiate of std::basic_istream and std::basic_ostream 

Instantiate them correctly before they are used as member variables to
fix regression in e07957ad4c.

std::cin is read-only! ...

checking python testcase li_std_string_extra (with run test)
In file included from /usr/include/c++/9/ios:44,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from li_std_stream_wrap.cxx:3278:
/usr/include/c++/9/bits/basic_ios.h: In member function ‘std::basic_ios<char>& std::basic_ios<char>::operator=(const std::basic_ios<char>&)’:
/usr/include/c++/9/bits/basic_ios.h:67:11: error: ‘std::ios_base& std::ios_base::operator=(const std::ios_base&)’ is private within this context
   67 |     class basic_ios : public ios_base
      |           ^~~~~~~~~
In file included from /usr/include/c++/9/ios:42,
                 from /usr/include/c++/9/ostream:38,
                 from /usr/include/c++/9/iostream:39,
                 from li_std_stream_wrap.cxx:3278:
/usr/include/c++/9/bits/ios_base.h:870:5: note: declared private here
  870 |     operator=(const ios_base&);
      |     ^~~~~~~~
In file included from /usr/include/c++/9/iostream:40,
                 from li_std_stream_wrap.cxx:3278:
/usr/include/c++/9/istream: In member function ‘std::basic_istream<char>& std::basic_istream<char>::operator=(const std::basic_istream<char>&)’:
/usr/include/c++/9/istream:58:11: note: synthesized method ‘std::basic_ios<char>& std::basic_ios<char>::operator=(const std::basic_ios<char>&)’ first required here
   58 |     class basic_istream : virtual public basic_ios<_CharT, _Traits>
      |           ^~~~~~~~~~~~~
li_std_stream_wrap.cxx: In function ‘int Swig_var_cin_set(PyObject*)’:
li_std_stream_wrap.cxx:13992:19: note: synthesized method ‘std::basic_istream<char>& std::basic_istream<char>::operator=(const std::basic_istream<char>&)’ first required here
13992 |       std::cin = *temp;
This commit is contained in:
William S Fulton 2023-09-07 22:04:01 +01:00
parent 275764c7bb
commit 4f337d6495
1 changed files with 8 additions and 4 deletions
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12
Lib/std/std_iostream.i
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@ -264,6 +264,14 @@ namespace std
seekg(off_type, ios_base::seekdir);
};
%template(ostream) basic_ostream<char>;
%template(istream) basic_istream<char>;
#if defined(SWIG_WCHAR)
%template(wostream) basic_ostream<wchar_t>;
%template(wistream) basic_istream<wchar_t>;
#endif
// 27.6.1.5 Template class basic_iostream
template<typename _CharT, typename _Traits = char_traits<_CharT> >
class basic_iostream
@ -318,8 +326,6 @@ namespace std
}
namespace std {
%template(ostream) basic_ostream<char>;
%template(istream) basic_istream<char>;
%template(iostream) basic_iostream<char>;
%template(endl) endl<char, std::char_traits<char> >;
@ -327,8 +333,6 @@ namespace std {
%template(flush) flush<char, std::char_traits<char> >;
#if defined(SWIG_WCHAR)
%template(wostream) basic_ostream<wchar_t>;
%template(wistream) basic_istream<wchar_t>;
%template(wiostream) basic_iostream<wchar_t>;
%template(wendl) endl<wchar_t, std::char_traits<wchar_t> >;