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Re: (ITS#8015) memcpy() overlapping in many places

To: openldap-its@OpenLDAP.org
Subject: Re: (ITS#8015) memcpy() overlapping in many places
From: kurt@OpenLDAP.org
Date: Sat, 03 Jan 2015 21:02:26 +0000
Auto-submitted: auto-generated (OpenLDAP-ITS)
AC_MEMCPY is generally memove(3).  It would only be memcpy(3) if both =
memmove(3) or bcopy(3) were not available.  So at most your patch will =
cause link errors.

=E2=80=94 Kurt

> On Jan 3, 2015, at 11:21 AM, leo@yuriev.ru wrote:
>=20
> This is a multi-part message in MIME format.
> --------------090408030902080204080503
> Content-Type: text/plain; charset=3Dwindows-1251; format=3Dflowed
> Content-Transfer-Encoding: 7bit
>=20
> Please review and merge.
>=20
> Leonid.
>=20
>=20
> --------------090408030902080204080503
> Content-Type: text/x-patch;
> name=3D"its8015.patch"
> Content-Transfer-Encoding: 7bit
> Content-Disposition: attachment;
> filename=3D"its8015.patch"
>=20
> commit 8d55a7c88c6655879ffc677e5a9873f29bb7a802
> Author: Leo Yuriev <leo@yuriev.ru>
> Date:   2015-01-01 16:00:58 +0300
>=20
>    ITS#8015 replace memcpy() by memmove() for overlapped src & dst.
>=20
>    http://lwn.net/Articles/414467/
>=20
>    Initially a few cases have been detected using Valgrind.
>    After that I manually reviewed all calls memcpy() and AC_MEMCPY()
>    it the 2.4 branch.
>=20
>    Unfortunately, we can not expect that all of these mistakes
>    corrected, but it is much more than nothing.
>=20
> diff --git a/libraries/liblber/encode.c b/libraries/liblber/encode.c
> index e39fa07..3eb15c6 100644
> --- a/libraries/liblber/encode.c
> +++ b/libraries/liblber/encode.c
> @@ -398,7 +398,7 @@ ber_start_seqorset(
> 			return -1;
> 	}
> 	dest =3D *p;
> -	AC_MEMCPY( dest, headptr, headlen );
> +	memmove( dest, headptr, headlen );
> 	ber->ber_sos_ptr =3D dest + headlen;
>=20
> 	ber->ber_sos_inner =3D dest + taglen - ber->ber_buf;
> @@ -467,7 +467,7 @@ ber_put_seqorset( BerElement *ber )
> 		if ( unused !=3D 0 ) {
> 			/* length(length) < the reserved SOS_LENLEN =
bytes */
> 			xlen -=3D unused;
> -			AC_MEMCPY( lenptr, p, xlen );
> +			memmove( lenptr, p, xlen );
> 			ber->ber_sos_ptr =3D (char *) lenptr + xlen;
> 		}
> 	}
> diff --git a/libraries/libldap/sasl.c b/libraries/libldap/sasl.c
> index 8878d1f..4ad605f 100644
> --- a/libraries/libldap/sasl.c
> +++ b/libraries/libldap/sasl.c
> @@ -628,7 +628,7 @@ sb_sasl_generic_drop_packet (
>=20
> 	len =3D p->sec_buf_in.buf_ptr - p->sec_buf_in.buf_end;
> 	if ( len > 0 )
> -		AC_MEMCPY( p->sec_buf_in.buf_base, =
p->sec_buf_in.buf_base +
> +		memmove( p->sec_buf_in.buf_base, p->sec_buf_in.buf_base =
+
> 			p->sec_buf_in.buf_end, len );
>=20
> 	if ( len >=3D 4 ) {
> diff --git a/libraries/liblutil/utils.c b/libraries/liblutil/utils.c
> index 310380b..a783167 100644
> --- a/libraries/liblutil/utils.c
> +++ b/libraries/liblutil/utils.c
> @@ -841,7 +841,7 @@ lutil_str2bin( struct berval *in, struct berval =
*out, void *ctx )
> 			num.buf[num.beg] =3D neg;
> 		}
> 		if ( num.beg )
> -			AC_MEMCPY( num.buf, num.buf+num.beg, num.len );
> +			memmove( num.buf, num.buf+num.beg, num.len );
> 		out->bv_len =3D num.len;
> decfail:
> 		if ( tmp !=3D tmpbuf ) {
> diff --git a/servers/slapd/aclparse.c b/servers/slapd/aclparse.c
> index f5c244c..f935efc 100644
> --- a/servers/slapd/aclparse.c
> +++ b/servers/slapd/aclparse.c
> @@ -2317,7 +2317,7 @@ acl_regex_normalized_dn(
> 			for ( q =3D &p[2]; q[0] =3D=3D ' '; q++ ) {
> 				/* DO NOTHING */ ;
> 			}
> -			AC_MEMCPY( p+1, q, len-(q-str)+1);
> +			memmove( p+1, q, len-(q-str)+1);
> 		}
> 	}
> 	pattern->bv_val =3D str;
> diff --git a/servers/slapd/ad.c b/servers/slapd/ad.c
> index 6f6cb2f..2357452 100644
> --- a/servers/slapd/ad.c
> +++ b/servers/slapd/ad.c
> @@ -277,7 +277,7 @@ int slap_bv2ad(
> 				} else if ( rc > 0 ||
> 					( rc =3D=3D 0 && =
(unsigned)optlen > tags[i].bv_len ))
> 				{
> -					AC_MEMCPY( &tags[i+2], =
&tags[i+1],
> +					memmove( &tags[i+2], &tags[i+1],
> 						=
(ntags-i-1)*sizeof(struct berval) );
> 					tags[i+1].bv_val =3D opt;
> 					tags[i+1].bv_len =3D optlen;
> @@ -286,7 +286,7 @@ int slap_bv2ad(
> 			}
>=20
> 			if( ntags ) {
> -				AC_MEMCPY( &tags[1], &tags[0],
> +				memmove( &tags[1], &tags[0],
> 					ntags*sizeof(struct berval) );
> 			}
> 			tags[0].bv_val =3D opt;
> diff --git a/servers/slapd/back-bdb/attr.c =
b/servers/slapd/back-bdb/attr.c
> index 2f183b3..e4ab16f 100644
> --- a/servers/slapd/back-bdb/attr.c
> +++ b/servers/slapd/back-bdb/attr.c
> @@ -71,7 +71,7 @@ ainfo_insert( struct bdb_info *bdb, AttrInfo *a )
> 	bdb->bi_attrs =3D ch_realloc( bdb->bi_attrs, ( bdb->bi_nattrs+1 =
) *=20
> 		sizeof( AttrInfo * ));
> 	if ( x < bdb->bi_nattrs )
> -		AC_MEMCPY( &bdb->bi_attrs[x+1], &bdb->bi_attrs[x],
> +		memmove( &bdb->bi_attrs[x+1], &bdb->bi_attrs[x],
> 			( bdb->bi_nattrs - x ) * sizeof( AttrInfo *));
> 	bdb->bi_attrs[x] =3D a;
> 	bdb->bi_nattrs++;
> diff --git a/servers/slapd/back-bdb/idl.c =
b/servers/slapd/back-bdb/idl.c
> index c6bc9f3..f024245 100644
> --- a/servers/slapd/back-bdb/idl.c
> +++ b/servers/slapd/back-bdb/idl.c
> @@ -204,7 +204,7 @@ int bdb_idl_insert( ID *ids, ID id )
> =09
> 	} else {
> 		/* insert id */
> -		AC_MEMCPY( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) =
);
> +		memmove( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) );
> 		ids[x] =3D id;
> 	}
>=20
> @@ -262,7 +262,7 @@ int bdb_idl_delete( ID *ids, ID id )
> 		}
>=20
> 	} else {
> -		AC_MEMCPY( &ids[x], &ids[x+1], (1+ids[0]-x) * sizeof(ID) =
);
> +		memmove( &ids[x], &ids[x+1], (1+ids[0]-x) * sizeof(ID) =
);
> 	}
>=20
> #if IDL_DEBUG > 1
> diff --git a/servers/slapd/back-ldap/config.c =
b/servers/slapd/back-ldap/config.c
> index 11a4ac4..4b5c394 100644
> --- a/servers/slapd/back-ldap/config.c
> +++ b/servers/slapd/back-ldap/config.c
> @@ -1047,7 +1047,7 @@ ldap_back_cf_gen( ConfigArgs *c )
>=20
> 			if ( i ) {
> 				bv.bv_len -=3D i;
> -				AC_MEMCPY( bv.bv_val, &bv.bv_val[ i ],
> +				memmove( bv.bv_val, &bv.bv_val[ i ],
> 					bv.bv_len + 1 );
> 			}
>=20
> @@ -1239,7 +1239,7 @@ ldap_back_cf_gen( ConfigArgs *c )
>=20
> 				if ( i ) {
> 					bc.bv_len -=3D i;
> -					AC_MEMCPY( bc.bv_val, =
&bc.bv_val[ i ], bc.bv_len + 1 );
> +					memmove( bc.bv_val, &bc.bv_val[ =
i ], bc.bv_len + 1 );
> 				}
>=20
> 				bv =3D bc;
> @@ -1298,7 +1298,7 @@ ldap_back_cf_gen( ConfigArgs *c )
>=20
> 			if ( i ) {
> 				bv.bv_len -=3D i;
> -				AC_MEMCPY( bv.bv_val, &bv.bv_val[ i ],
> +				memmove( bv.bv_val, &bv.bv_val[ i ],
> 					bv.bv_len + 1 );
> 			}
>=20
> diff --git a/servers/slapd/back-ldap/search.c =
b/servers/slapd/back-ldap/search.c
> index eeab466..b100510 100644
> --- a/servers/slapd/back-ldap/search.c
> +++ b/servers/slapd/back-ldap/search.c
> @@ -109,7 +109,7 @@ ldap_back_munge_filter(
>=20
> 		ptr =3D filter->bv_val + ( ptr - oldfilter.bv_val );
>=20
> -		AC_MEMCPY( &ptr[ newbv->bv_len ],
> +		memmove( &ptr[ newbv->bv_len ],
> 				&ptr[ oldbv->bv_len ],=20
> 				oldfilter.bv_len - ( ptr - =
filter->bv_val ) - oldbv->bv_len + 1 );
> 		AC_MEMCPY( ptr, newbv->bv_val, newbv->bv_len );
> diff --git a/servers/slapd/back-mdb/attr.c =
b/servers/slapd/back-mdb/attr.c
> index 5da9da9..38e513e 100644
> --- a/servers/slapd/back-mdb/attr.c
> +++ b/servers/slapd/back-mdb/attr.c
> @@ -71,7 +71,7 @@ ainfo_insert( struct mdb_info *mdb, AttrInfo *a )
> 	mdb->mi_attrs =3D ch_realloc( mdb->mi_attrs, ( mdb->mi_nattrs+1 =
) *=20
> 		sizeof( AttrInfo * ));
> 	if ( x < mdb->mi_nattrs )
> -		AC_MEMCPY( &mdb->mi_attrs[x+1], &mdb->mi_attrs[x],
> +		memmove( &mdb->mi_attrs[x+1], &mdb->mi_attrs[x],
> 			( mdb->mi_nattrs - x ) * sizeof( AttrInfo *));
> 	mdb->mi_attrs[x] =3D a;
> 	mdb->mi_nattrs++;
> diff --git a/servers/slapd/back-mdb/idl.c =
b/servers/slapd/back-mdb/idl.c
> index 3c2f986..c03f7c3 100644
> --- a/servers/slapd/back-mdb/idl.c
> +++ b/servers/slapd/back-mdb/idl.c
> @@ -173,7 +173,7 @@ int mdb_idl_insert( ID *ids, ID id )
> =09
> 	} else {
> 		/* insert id */
> -		AC_MEMCPY( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) =
);
> +		memmove( &ids[x+1], &ids[x], (ids[0]-x) * sizeof(ID) );
> 		ids[x] =3D id;
> 	}
>=20
> @@ -231,7 +231,7 @@ static int mdb_idl_delete( ID *ids, ID id )
> 		}
>=20
> 	} else {
> -		AC_MEMCPY( &ids[x], &ids[x+1], (1+ids[0]-x) * sizeof(ID) =
);
> +		memmove( &ids[x], &ids[x+1], (1+ids[0]-x) * sizeof(ID) =
);
> 	}
>=20
> #if IDL_DEBUG > 1
> diff --git a/servers/slapd/back-meta/config.c =
b/servers/slapd/back-meta/config.c
> index e3164b0..daa5e8b 100644
> --- a/servers/slapd/back-meta/config.c
> +++ b/servers/slapd/back-meta/config.c
> @@ -1340,7 +1340,7 @@ meta_back_cf_gen( ConfigArgs *c )
>=20
> 			if ( i ) {
> 				bv.bv_len -=3D i;
> -				AC_MEMCPY( bv.bv_val, &bv.bv_val[ i ],
> +				memmove( bv.bv_val, &bv.bv_val[ i ],
> 					bv.bv_len + 1 );
> 			}
>=20
> @@ -1597,7 +1597,7 @@ meta_back_cf_gen( ConfigArgs *c )
>=20
> 				if ( i ) {
> 					bc.bv_len -=3D i;
> -					AC_MEMCPY( bc.bv_val, =
&bc.bv_val[ i ], bc.bv_len + 1 );
> +					memmove( bc.bv_val, &bc.bv_val[ =
i ], bc.bv_len + 1 );
> 				}
>=20
> 				bv =3D bc;
> @@ -2720,7 +2720,7 @@ idassert-authzFrom	"dn:<rootdn>"
> 			int len =3D strlen( argv[ 0 ] );
>=20
> 			ber_str2bv( line, 0, 0, &bv );
> -			AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + =
1 ],
> +			memmove( &bv.bv_val[ len ], &bv.bv_val[ len + 1 =
],
> 				bv.bv_len - ( len + 1 ));
> 			bv.bv_val[ bv.bv_len - 1] =3D '"';
> 			ber_bvarray_add( &mt->mt_rwmap.rwm_bva_rewrite, =
&bv );
> diff --git a/servers/slapd/back-sql/util.c =
b/servers/slapd/back-sql/util.c
> index 3564527..7c77964 100644
> --- a/servers/slapd/back-sql/util.c
> +++ b/servers/slapd/back-sql/util.c
> @@ -411,7 +411,7 @@ backsql_split_pattern(
>=20
> 		} else if ( real_end[ 1 ] =3D=3D SPLIT_CHAR ) {
> 			expected++;
> -			AC_MEMCPY( real_end, real_end + 1, strlen( =
real_end ) );
> +			memmove( real_end, real_end + 1, strlen( =
real_end ) );
> 			end =3D strchr( real_end + 1, SPLIT_CHAR );
> 			continue;
> 		}
> diff --git a/servers/slapd/bconfig.c b/servers/slapd/bconfig.c
> index 2214334..9655629 100644
> --- a/servers/slapd/bconfig.c
> +++ b/servers/slapd/bconfig.c
> @@ -2353,7 +2353,7 @@ sortval_reject:
> 					s =3D ber_bvchr( &bv, '"' );
> 					assert( s !=3D NULL );
> 					/* move the trailing quote of =
argv[0] to the end */
> -					AC_MEMCPY( s, s + 1, bv.bv_len - =
( s - bv.bv_val ) );
> +					memmove( s, s + 1, bv.bv_len - ( =
s - bv.bv_val ) );
> 					bv.bv_val[ bv.bv_len - 1 ] =3D =
'"';
>=20
> 				} else {
> diff --git a/servers/slapd/config.c b/servers/slapd/config.c
> index cdc17d9..5c0dd55 100644
> --- a/servers/slapd/config.c
> +++ b/servers/slapd/config.c
> @@ -2159,12 +2159,12 @@ strtok_quote( char *line, char *sep, char =
**quote_ptr )
> 			} else {
> 				inquote =3D 1;
> 			}
> -			AC_MEMCPY( next, next + 1, strlen( next + 1 ) + =
1 );
> +			memmove( next, next + 1, strlen( next + 1 ) + 1 =
);
> 			break;
>=20
> 		case '\\':
> 			if ( next[1] )
> -				AC_MEMCPY( next,
> +				memmove( next,
> 					    next + 1, strlen( next + 1 ) =
+ 1 );
> 			next++;		/* dont parse the escaped =
character */
> 			break;
> diff --git a/servers/slapd/controls.c b/servers/slapd/controls.c
> index 9b51f95..6b1f1d7 100644
> --- a/servers/slapd/controls.c
> +++ b/servers/slapd/controls.c
> @@ -1005,7 +1005,7 @@ slap_remove_control(
> 		op->o_tmpfree( op->o_ctrls[ j ], op->o_tmpmemctx );
>=20
> 		if ( i > 1 ) {
> -			AC_MEMCPY( &op->o_ctrls[ j ], &op->o_ctrls[ j + =
1 ],
> +			memmove( &op->o_ctrls[ j ], &op->o_ctrls[ j + 1 =
],
> 				( i - j ) * sizeof( LDAPControl * ) );
>=20
> 		} else {
> diff --git a/servers/slapd/overlays/constraint.c =
b/servers/slapd/overlays/constraint.c
> index 096f32a..99844a5 100644
> --- a/servers/slapd/overlays/constraint.c
> +++ b/servers/slapd/overlays/constraint.c
> @@ -401,7 +401,7 @@ constraint_cf_gen( ConfigArgs *c )
> 						rc =3D ARG_BAD_CONF;
> 						goto done;
> 					}
> -					AC_MEMCPY( =
&ap.lud->lud_filter[0], &ap.lud->lud_filter[1], len - 2 );
> +					memmove( &ap.lud->lud_filter[0], =
&ap.lud->lud_filter[1], len - 2 );
> 					ap.lud->lud_filter[len - 2] =3D =
'\0';
> 				}
>=20
> diff --git a/servers/slapd/overlays/memberof.c =
b/servers/slapd/overlays/memberof.c
> index 17cbae7..dcfb047 100644
> --- a/servers/slapd/overlays/memberof.c
> +++ b/servers/slapd/overlays/memberof.c
> @@ -616,10 +616,10 @@ memberof_op_add( Operation *op, SlapReply *rs )
> 						break;
> 					}
> 	=09
> -					AC_MEMCPY( &a->a_vals[ i ], =
&a->a_vals[ i + 1 ],
> +					memmove( &a->a_vals[ i ], =
&a->a_vals[ i + 1 ],
> 						sizeof( struct berval ) =
* ( j - i ) );
> 					if ( a->a_nvals !=3D a->a_vals ) =
{
> -						AC_MEMCPY( &a->a_nvals[ =
i ], &a->a_nvals[ i + 1 ],
> +						memmove( &a->a_nvals[ i =
], &a->a_nvals[ i + 1 ],
> 							sizeof( struct =
berval ) * ( j - i ) );
> 					}
> 					i--;
> @@ -698,10 +698,10 @@ memberof_op_add( Operation *op, SlapReply *rs )
> 						break;
> 					}
> 	=09
> -					AC_MEMCPY( &a->a_vals[ i ], =
&a->a_vals[ i + 1 ],
> +					memmove( &a->a_vals[ i ], =
&a->a_vals[ i + 1 ],
> 						sizeof( struct berval ) =
* ( j - i ) );
> 					if ( a->a_nvals !=3D a->a_vals ) =
{
> -						AC_MEMCPY( &a->a_nvals[ =
i ], &a->a_nvals[ i + 1 ],
> +						memmove( &a->a_nvals[ i =
], &a->a_nvals[ i + 1 ],
> 							sizeof( struct =
berval ) * ( j - i ) );
> 					}
> 					i--;
> @@ -922,9 +922,9 @@ memberof_op_modify( Operation *op, SlapReply *rs )
> 								break;
> 							}
> 	=09
> -							AC_MEMCPY( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> +							memmove( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> 								sizeof( =
struct berval ) * ( j - i ) );
> -							AC_MEMCPY( =
&ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> +							memmove( =
&ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> 								sizeof( =
struct berval ) * ( j - i ) );
> 							i--;
> 						}
> @@ -1022,10 +1022,10 @@ memberof_op_modify( Operation *op, SlapReply =
*rs )
> 								break;
> 							}
> 	=09
> -							AC_MEMCPY( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> +							memmove( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> 								sizeof( =
struct berval ) * ( j - i ) );
> 							if ( =
ml->sml_nvalues !=3D ml->sml_values ) {
> -								=
AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> +								memmove( =
&ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> 									=
sizeof( struct berval ) * ( j - i ) );
> 							}
> 							i--;
> @@ -1140,10 +1140,10 @@ memberof_op_modify( Operation *op, SlapReply =
*rs )
> 							break;
> 						}
> =09
> -						AC_MEMCPY( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> +						memmove( =
&ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
> 							sizeof( struct =
berval ) * ( j - i ) );
> 						if ( ml->sml_nvalues !=3D =
ml->sml_values ) {
> -							AC_MEMCPY( =
&ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> +							memmove( =
&ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
> 								sizeof( =
struct berval ) * ( j - i ) );
> 						}
> 						i--;
> diff --git a/servers/slapd/overlays/rwm.c =
b/servers/slapd/overlays/rwm.c
> index 1fbfac3..22a536a 100644
> --- a/servers/slapd/overlays/rwm.c
> +++ b/servers/slapd/overlays/rwm.c
> @@ -2014,7 +2014,7 @@ rwm_bva_add(
> 		int	len =3D strlen( argv[ 0 ] );
>=20
> 		ber_str2bv( line, 0, 0, &bv );
> -		AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
> +		memmove( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
> 			bv.bv_len - ( len + 1 ) );
> 		bv.bv_val[ bv.bv_len - 1 ] =3D '"';
>=20
> diff --git a/servers/slapd/sasl.c b/servers/slapd/sasl.c
> index b47a528..7436614 100644
> --- a/servers/slapd/sasl.c
> +++ b/servers/slapd/sasl.c
> @@ -1342,7 +1342,7 @@ slap_sasl_peer2ipport( struct berval *peer )
> 		*p =3D ';';
> 		if ( isv6 ) {
> 			assert( p[-1] =3D=3D ']' );
> -			AC_MEMCPY( &p[-1], p, plen - ( p - ipport ) + 1 =
);
> +			memmove( &p[-1], p, plen - ( p - ipport ) + 1 );
> 		}
>=20
> 	} else if ( isv6 ) {
> diff --git a/servers/slapd/saslauthz.c b/servers/slapd/saslauthz.c
> index 5e0ebbe..5449603 100644
> --- a/servers/slapd/saslauthz.c
> +++ b/servers/slapd/saslauthz.c
> @@ -182,14 +182,14 @@ int slap_parse_user( struct berval *id, struct =
berval *user,
> 	if ( !BER_BVISNULL( mech ) ) {
> 		assert( mech->bv_val =3D=3D id->bv_val + 2 );
>=20
> -		AC_MEMCPY( mech->bv_val - 2, mech->bv_val, mech->bv_len =
+ 1 );
> +		memmove( mech->bv_val - 2, mech->bv_val, mech->bv_len + =
1 );
> 		mech->bv_val -=3D 2;
> 	}
>=20
> 	if ( !BER_BVISNULL( realm ) ) {
> 		assert( realm->bv_val >=3D id->bv_val + 2 );
>=20
> -		AC_MEMCPY( realm->bv_val - 2, realm->bv_val, =
realm->bv_len + 1 );
> +		memmove( realm->bv_val - 2, realm->bv_val, realm->bv_len =
+ 1 );
> 		realm->bv_val -=3D 2;
> 	}
>=20
>=20
> --------------090408030902080204080503--
>=20
>=20
>=20
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