[Bug c++/18257] New: [4.0 Regression] ld: 0711-317 ERROR: Undefined symbol: typeinfo for int

["danglin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

On systems that don't have weak or one-only support (e.g., AIX 4.x and 5.1),
the libstdc++ library no longer contains strong definitions for the typeinfo
for types that should be in the runtime library.  This is because
import_export_decl now always gives the declarations comdat linkage.

As a result, there are mainy fails in the g++ and libstdc++ suites
similar to the following:

Executing on host: /opt/build/dave/gcc-4.0.0/objdir/gcc/testsuite/../g++ -B/opt/
build/dave/gcc-4.0.0/objdir/gcc/testsuite/../ cp_compat_main_tst.o cp_compat_x_t
st.o cp_compat_y_tst.o  -nostdinc++ -I/opt/build/dave/gcc-4.0.0/objdir/powerpc-i
bm-aix4.3.3.0/libstdc++-v3/include/powerpc-ibm-aix4.3.3.0 -I/opt/build/dave/gcc-
4.0.0/objdir/powerpc-ibm-aix4.3.3.0/libstdc++-v3/include -I/opt/build/dave/gcc-4
.0.0/gcc/libstdc++-v3/libsupc++ -I/opt/build/dave/gcc-4.0.0/gcc/libstdc++-v3/inc
lude/backward -I/opt/build/dave/gcc-4.0.0/gcc/libstdc++-v3/testsuite -fmessage-l
ength=0      -L/opt/build/dave/gcc-4.0.0/objdir/powerpc-ibm-aix4.3.3.0/./libstdc
++-v3/src/.libs -L/opt/build/dave/gcc-4.0.0/objdir/powerpc-ibm-aix4.3.3.0/./libi
berty  -lm   -o g++-dg-compat-eh-dtor1-01    (timeout = 300)
ld: 0711-317 ERROR: Undefined symbol: typeinfo for int
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
collect2: ld returned 8 exit status
compiler exited with status 1
output is:
ld: 0711-317 ERROR: Undefined symbol: typeinfo for int
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
collect2: ld returned 8 exit status

FAIL: g++.dg/compat/eh/dtor1 cp_compat_x_tst.o-cp_compat_y_tst.o link

-- 
           Summary: [4.0 Regression] ld: 0711-317 ERROR: Undefined symbol:
                    typeinfo for int
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: danglin at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-ibm-aix4.3.3.0
  GCC host triplet: powerpc-ibm-aix4.3.3.0
GCC target triplet: powerpc-ibm-aix4.3.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18257