patch for fstream.cc

[Vadim Egorov]

Vadim Egorov wrote:
> 
> Hello,
> When I tryed to use std::wcout in simple test like this:
> 
> std::wcout << L"hellow world" << endl ;
> std::wcout << L"hellow world" << endl ;
> 
> I got a lot of garbage  in output.
> 
> I think I managed to locate the source of error.
> 
> Here is a small patch to fix the problem.

Actually I found that there are two identical places where basic_filebuf
converts char_type string into
char string but allocates conversion buffer for char_type.

Now with Phil Edwards' fstream patch it works ok.

Here is updated patch

1999-06-08  Vadim Egorov  <egorovv@1c.ru>

         * bits/fstream.tcc (_M_really_overflow): Fixed size of
	 conversion buffer
 
Index: fstream.tcc
===================================================================
RCS file: /cvs/libstdc++/libstdc++/bits/fstream.tcc,v
retrieving revision 1.21
diff -c -r1.21 fstream.tcc
*** fstream.tcc	1999/06/03 00:47:35	1.21
--- fstream.tcc	1999/06/08 12:07:35
***************
*** 377,383 ****
  	    traits_type::copy(__pbuf, this->pbase(), __plen);
  	  char_type* __pend;
  	  
! 	  int __conv_len = __plen * sizeof(char_type);
  	  char __conv_buf[__conv_len];
  	  char* __conv_end;
  	  
--- 377,383 ----
  	    traits_type::copy(__pbuf, this->pbase(), __plen);
  	  char_type* __pend;
  	  
! 	  int __conv_len = __plen * sizeof(char);
  	  char __conv_buf[__conv_len];
  	  char* __conv_end;
  	  
***************
*** 519,525 ****
  		traits_type::copy(__rbuf, this->pbase(), __plen);
  		traits_type::copy(__rbuf + __plen, __unsft_buf, 
  				  __unsft_len);
! 		int __conv_len = __rlen * sizeof(char_type);
  		char __conv_buf[__conv_len];
  		char* __conv_end;
  		
--- 520,526 ----
  		traits_type::copy(__rbuf, this->pbase(), __plen);
  		traits_type::copy(__rbuf + __plen, __unsft_buf, 
  				  __unsft_len);
! 		int __conv_len = __rlen * sizeof(char);
  		char __conv_buf[__conv_len];
  		char* __conv_end;
  		
-- 
*********************************************
Vadim Egorov, 1C      *       ÷ÁÄÉÍ åÇÏÒÏ×,1C
egorovv@1c.ru         *         egorovv@1c.ru
*********************************************