[Bug c++/37235] New: method rope::copy( . . . ) is not working

[mbarbe at palermo dot edu]

The method rope::copy(size_type __pos, size_type __n, _CharT* __buffer) const
is not working in libstdc++ 4.3.0

I include a simple example q.cc that shows the problem:


#include <ext/rope>
int main() {
        __gnu_cxx::rope<char> r(128, ' ');
        r.append("1234",4);
        char buf[5];
        r.copy(128,4,buf);
        return 0;
} 




And this is the problem:

$ g++ q.cc -o q -Wall 
/usr/lib/gcc/i386-redhat-linux/4.3.0/../../../../include/c++/4.3.0/bits/stl_construct.h:
In function ‘void std::_Destroy(_ForwardIterator, _ForwardIterator,
_Allocator&) [with _ForwardIterator = char*, _Allocator = const
std::allocator<char>]Â’:
/usr/lib/gcc/i386-redhat-linux/4.3.0/../../../../include/c++/4.3.0/ext/rope:1963:
  instantiated from ‘size_t __gnu_cxx::rope<_CharT, _Alloc>::copy(size_t,
size_t, _CharT*) const [with _CharT = char, _Alloc = std::allocator<char>]Â’
q.cc:8:   instantiated from here
/usr/lib/gcc/i386-redhat-linux/4.3.0/../../../../include/c++/4.3.0/bits/stl_construct.h:120:
error: passing ‘const std::allocator<char>’ as ‘this’ argument of ‘void
__gnu_cxx::new_allocator<_Tp>::destroy(_Tp*) [with _Tp = char]Â’ discards
qualifiers




# g++ -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla
--enable-bootstrap --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --enable-plugin
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre
--enable-libgcj-multifile --enable-java-maintainer-mode
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib
--with-cpu=generic --build=i386-redhat-linux
Thread model: posix
gcc version 4.3.0 20080428 (Red Hat 4.3.0-8) (GCC)


-- 
           Summary: method rope::copy( . . . ) is not working
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: critical
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mbarbe at palermo dot edu
 GCC build triplet: 4.3.0
  GCC host triplet: 4.3.0
GCC target triplet: 4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37235