Re: problems with std::wstring on Solaris

["Anthony Feick" <afeick at hotmail dot com>]

I assume you're talking about PR 6702 :
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6702


When I did that and tried to recompile libstdc++, I had problems with 
iswblank, vfwscanf, vswscanf, vwscanf, and wcstof.  (Probably the reason 
GLIBCPP_USE_WCHAR_T was off.)  After I commented those out in 
gcc-3.2/libstdc++-v3/include/c_std/std_cwchar.h and 
gcc-3.2/libstdc++-v3/include/c_std/std_cwctype.h libstdc++ compiled and 
installed fine.

Unfortunately, now basic_string::push_back gives a Segfault wmemset () from 
/usr/lib/libc.so.1.  I assume this means I am now doing something 
incompatible with the system libraries.

This just seems unusual.  I had been using gcc 3.0.4 and libstdc++-v3.0.96 
perfectly on Solaris once I commented out iswblank.  Would I be better using 
ibstdc++-v3.0.96 with gcc 3.2??  The reason I'm doing the upgrade anyway is 
to get a standard release, and have the same gcc on all of the (UNIX) OSes 
we use.

$ gcc -v
Reading specs from 
/users/afeick/local/lib/gcc-lib/sparc-sun-solaris2.8/3.2/specs
Configured with: ../gcc-3.2/configure --prefix=/users/afeick/local 
--enable-threads=posix --enable-shared --enab
le-cxx-flags=-fshort-wchar --disable-multilib --disable-nls --with-gnu-ld 
--with-ld=/users/afeick/local/bin/ld -
-with-gnu-as --with-as=/users/afeick/local/bin/as --disable-libgcj
Thread model: posix
gcc version 3.2


> From: Benjamin Kosnik <bkoz@redhat.com>
> To: "Anthony Feick" <afeick@hotmail.com>
> CC: libstdc++@gcc.gnu.org
> Subject: Re: problems with std::wstring on Solaris
> Date: Wed, 21 Aug 2002 11:14:33 -0700
>
> > $ g++ test.cpp
> > /var/tmp//ccNdHTuR.o: In function `main':
> > /var/tmp//ccNdHTuR.o(.text+0xf4): undefined reference to
> > `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocato
> > r<wchar_t> >::basic_string[in-charge]()'
> > /var/tmp//ccNdHTuR.o(.text+0x100): undefined reference to
> > `std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocat
> > or<wchar_t> >::~basic_string [in-charge]()'
> > collect2: ld returned 1 exit status
> >
> > "std:string" works, but "std::wstring" and "std::basic_string<wchar_t>"
> > don't link.
>
> look for GLIBCPP_USE_WCHAR_T in c++config.h
>
> It will be off on solaris. There's a bug in GNATS about this.
>
> -benjamin



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