/*
From: Richard Kettlewell <rjk@sfere.greenend.org.uk>
To: submit@bugs.debian.org
Subject: Bug#46550: basic_string<wchar_t> can't be instantiated
Date: Sun, 3 Oct 1999 22:49:50 +0100

Package: libstdc++2.9-dev
Version: 2.91.60-5

Hi,

This ought to work, but it doesn't:

------------------------------------------------------------------------
lyonesse$ cat t.cc
*/

#include <string>

template basic_string<wchar_t>;

/*
lyonesse$ c++ -c t.cc
/usr/include/g++-2/std/bastring.h: In method `const __wchar_t * basic_string<__wchar_t,string_char_traits<__wchar_t>,__default_alloc_template<true,0> >::c_str<__wchar_t, string_char_traits<__wchar_t>, alloc>() const':
t.cc:3:   instantiated from here
/usr/include/g++-2/std/bastring.h:301: return to `const __wchar_t *' from `char *'
lyonesse$ 
------------------------------------------------------------------------

# DP: Here is a patch to /usr/include/g++-2/std/bastring.h which makes it
# DP: work for me (though note that I have not tested the c_str() method as
# DP: such):

------------------------------------------------------------------------
--- libstdc++/std/bastring.h.orig	Sun Oct  3 22:32:06 1999
+++ libstdc++/std/bastring.h	Sun Oct  3 22:36:17 1999
@@ -332,7 +332,8 @@
 
 public:
   const charT* c_str () const
-    { if (length () == 0) return ""; terminate (); return data (); }
+    { const charT* null_str = ""; 
+      if (length () == 0) return null_str; terminate (); return data (); }
   void resize (size_type n, charT c);
   void resize (size_type n)
     { resize (n, eos ()); }