when glibc runs its tests, it does so by invoking the local library loader.

 in Gentoo, we build/run inside of our "sandbox" which itself is linked against

 libdl (so that it can load libraries and pull out symbols).  the trouble

 is that when you upgrade from an older glibc to the new one, often times

 internal symbols change name or abi.  this is normally OK as you cannot use

 libc.so from say version 2.3.6 but libpthread.so from say version 2.5, so

 we always say "keep all of the glibc libraries from the same build".  but

 when glibc runs its tests, it uses dynamic paths to point to its new local

 copies of libraries.  if the test doesnt use libdl, then glibc doesnt add

 its path, and when sandbox triggers the loading of libdl, glibc does so

 from the host system system.  this gets us into the case of all libraries

 are from the locally compiled version of glibc except for libdl.so.

 Fix by Wormo

 http://bugs.gentoo.org/56898

 diff -durN glibc-2.13.orig/grp/tst_fgetgrent.sh glibc-2.13/grp/tst_fgetgrent.sh

 --- glibc-2.13.orig/grp/tst_fgetgrent.sh	2001-07-06 06:54:46.000000000 +0200

 +++ glibc-2.13/grp/tst_fgetgrent.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -24,7 +24,8 @@

  rtld_installed_name=$1; shift

  testout=${common_objpfx}/grp/tst_fgetgrent.out

 -library_path=${common_objpfx}

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

  result=0

 diff -durN glibc-2.13.orig/iconvdata/run-iconv-test.sh glibc-2.13/iconvdata/run-iconv-test.sh

 --- glibc-2.13.orig/iconvdata/run-iconv-test.sh	2008-05-15 03:59:44.000000000 +0200

 +++ glibc-2.13/iconvdata/run-iconv-test.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -34,7 +34,7 @@

  export GCONV_PATH

  # We have to have some directories in the library path.

 -LIBPATH=$codir:$codir/iconvdata

 +LIBPATH=$codir:$codir/iconvdata:$codir/dlfcn

  # How the start the iconv(1) program.

  ICONV='$codir/elf/ld.so --library-path $LIBPATH --inhibit-rpath ${from}.so \

 diff -durN glibc-2.13.orig/iconvdata/tst-table.sh glibc-2.13/iconvdata/tst-table.sh

 --- glibc-2.13.orig/iconvdata/tst-table.sh	2002-04-24 23:39:35.000000000 +0200

 +++ glibc-2.13/iconvdata/tst-table.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -59,8 +59,11 @@

    irreversible=${charset}.irreversible

  fi

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  # iconv in one direction.

 -${common_objpfx}elf/ld.so --library-path $common_objpfx \

 +${common_objpfx}elf/ld.so --library-path $library_path \

  ${objpfx}tst-table-from ${charset} \

    > ${objpfx}tst-${charset}.table

 diff -durN glibc-2.13.orig/intl/tst-codeset.sh glibc-2.13/intl/tst-codeset.sh

 --- glibc-2.13.orig/intl/tst-codeset.sh	2005-04-06 04:18:35.000000000 +0200

 +++ glibc-2.13/intl/tst-codeset.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -37,6 +37,9 @@

  LOCPATH=${common_objpfx}localedata

  export LOCPATH

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  ${common_objpfx}elf/ld.so --library-path $common_objpfx \

  ${objpfx}tst-codeset > ${objpfx}tst-codeset.out

 diff -durN glibc-2.13.orig/intl/tst-gettext.sh glibc-2.13/intl/tst-gettext.sh

 --- glibc-2.13.orig/intl/tst-gettext.sh	2004-08-15 21:28:18.000000000 +0200

 +++ glibc-2.13/intl/tst-gettext.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -51,9 +51,12 @@

  LOCPATH=${common_objpfx}localedata

  export LOCPATH

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  # Now run the test.

  MALLOC_TRACE=$malloc_trace LOCPATH=${objpfx}localedir:$LOCPATH \

 -${common_objpfx}elf/ld.so --library-path $common_objpfx \

 +${common_objpfx}elf/ld.so --library-path $library_path \

  ${objpfx}tst-gettext > ${objpfx}tst-gettext.out ${objpfx}domaindir

  exit $?

 diff -durN glibc-2.13.orig/intl/tst-gettext2.sh glibc-2.13/intl/tst-gettext2.sh

 --- glibc-2.13.orig/intl/tst-gettext2.sh	2005-05-04 19:54:48.000000000 +0200

 +++ glibc-2.13/intl/tst-gettext2.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -65,8 +65,11 @@

  LOCPATH=${objpfx}domaindir

  export LOCPATH

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  # Now run the test.

 -${common_objpfx}elf/ld.so --library-path $common_objpfx \

 +${common_objpfx}elf/ld.so --library-path $library_path \

  ${objpfx}tst-gettext2 > ${objpfx}tst-gettext2.out ${objpfx}domaindir &&

  cmp ${objpfx}tst-gettext2.out - <<EOF

  String1 - Lang1: 1st string

 diff -durN glibc-2.13.orig/intl/tst-translit.sh glibc-2.13/intl/tst-translit.sh

 --- glibc-2.13.orig/intl/tst-translit.sh	2005-05-04 19:56:10.000000000 +0200

 +++ glibc-2.13/intl/tst-translit.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -36,7 +36,10 @@

  LOCPATH=${common_objpfx}localedata

  export LOCPATH

 -${common_objpfx}elf/ld.so --library-path $common_objpfx \

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

 +${common_objpfx}elf/ld.so --library-path $library_path \

  ${objpfx}tst-translit > ${objpfx}tst-translit.out ${objpfx}domaindir

  exit $?

 diff -durN glibc-2.13.orig/malloc/tst-mtrace.sh glibc-2.13/malloc/tst-mtrace.sh

 --- glibc-2.13.orig/malloc/tst-mtrace.sh	2005-10-15 01:40:35.000000000 +0200

 +++ glibc-2.13/malloc/tst-mtrace.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -24,9 +24,12 @@

  status=0

  trap "rm -f ${common_objpfx}malloc/tst-mtrace.leak; exit 1" 1 2 15

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  MALLOC_TRACE=${common_objpfx}malloc/tst-mtrace.leak \

  LOCPATH=${common_objpfx}localedata GCONV_PATH=${common_objpfx}iconvdata \

 -${common_objpfx}elf/ld.so --library-path $common_objpfx \

 +${common_objpfx}elf/ld.so --library-path $library_path \

    ${common_objpfx}malloc/tst-mtrace || status=1

  if test $status -eq 0 && test -f ${common_objpfx}malloc/mtrace; then

 diff -durN glibc-2.13.orig/nptl/tst-tls6.sh glibc-2.13/nptl/tst-tls6.sh

 --- glibc-2.13.orig/nptl/tst-tls6.sh	2003-09-03 00:02:59.000000000 +0200

 +++ glibc-2.13/nptl/tst-tls6.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -5,8 +5,8 @@

  rtld_installed_name=$1; shift

  logfile=$common_objpfx/nptl/tst-tls6.out

 -# We have to find libc and nptl

 -library_path=${common_objpfx}:${common_objpfx}nptl

 +# We have to find libc and nptl (also libdl in case sandbox is in use)

 +library_path=${common_objpfx}:${common_objpfx}nptl:${common_objpfx}/dlfcn

  tst_tls5="${elf_objpfx}${rtld_installed_name} --library-path ${library_path} \

  	  ${common_objpfx}/nptl/tst-tls5"

 diff -durN glibc-2.13.orig/posix/globtest.sh glibc-2.13/posix/globtest.sh

 --- glibc-2.13.orig/posix/globtest.sh	2008-12-06 07:05:39.000000000 +0100

 +++ glibc-2.13/posix/globtest.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -18,7 +18,7 @@

  esac

  # We have to find the libc and the NSS modules.

 -library_path=${common_objpfx}:${common_objpfx}nss:${common_objpfx}nis:${common_objpfx}db2:${common_objpfx}hesiod

 +library_path=${common_objpfx}:${common_objpfx}nss:${common_objpfx}nis:${common_objpfx}db2:${common_objpfx}hesiod:${common_objpfx}/dlfcn

  # Since we use `sort' we must make sure to use the same locale everywhere.

  LC_ALL=C

 diff -durN glibc-2.13.orig/posix/tst-getconf.sh glibc-2.13/posix/tst-getconf.sh

 --- glibc-2.13.orig/posix/tst-getconf.sh	2002-09-01 13:11:25.000000000 +0200

 +++ glibc-2.13/posix/tst-getconf.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -10,7 +10,10 @@

  else

    rtld_installed_name=$1; shift

    runit() {

 -    ${elf_objpfx}${rtld_installed_name} --library-path ${common_objpfx} "$@"

 +    

 +  # make sure libdl is also in path in case sandbox is in use

 +  library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +    ${elf_objpfx}${rtld_installed_name} --library-path ${library_path} "$@"

    }

  fi

 diff -durN glibc-2.13.orig/posix/wordexp-tst.sh glibc-2.13/posix/wordexp-tst.sh

 --- glibc-2.13.orig/posix/wordexp-tst.sh	2000-10-20 18:23:30.000000000 +0200

 +++ glibc-2.13/posix/wordexp-tst.sh	2009-11-13 00:50:37.000000000 +0100

 @@ -19,8 +19,11 @@

  "

  export IFS

 +# make sure libdl is also in path in case sandbox is in use

 +library_path=${common_objpfx}:${common_objpfx}/dlfcn

 +

  failed=0

 -${elf_objpfx}${rtld_installed_name} --library-path ${common_objpfx} \

 +${elf_objpfx}${rtld_installed_name} --library-path ${library_path} \

  ${common_objpfx}posix/wordexp-test '$*' > ${testout}1

  cat <<"EOF" | cmp - ${testout}1 >> $logfile || failed=1

  wordexp returned 0