[Bug c++/30423] New: compile with -O2 fails.

[Bug c++/30423] New: compile with -O2 fails.

[chat95 at mac dot com]

g++42 -v
Using built-in specs.
Target: x86_64-portbld-freebsd6.2
Configured with: ./..//gcc-4.2-20070102/configure --disable-nls
--with-system-zlib --with-libiconv-prefix=/usr/local --with-gmp=/usr/local
--program-suffix=42 --libdir=/usr/local/lib/gcc-4.2.0
--with-gxx-include-dir=/usr/local/lib/gcc-4.2.0/include/c++/
--infodir=/usr/local/info/gcc42 --disable-libgcj --prefix=/usr/local
x86_64-portbld-freebsd6.2
Thread model: posix
gcc version 4.2.0 20070102 (prerelease)
 g++42 -O -fno-strict-aliasing -pipe -o gendoc gendoc.cc
% ./gendoc 
/libexec/ld-elf.so.1: ./gendoc: Undefined symbol "_ZNSo9_M_insertEPKcl"
% g++42 -fno-strict-aliasing -pipe -o gendoc gendoc.cc
% ./gendoc
...works


-- 
           Summary: compile with -O2 fails.
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: chat95 at mac dot com
 GCC build triplet:  x86_64-portbld-freebsd6.2
  GCC host triplet:  x86_64-portbld-freebsd6.2
GCC target triplet:  x86_64-portbld-freebsd6.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[chat95 at mac dot com]

------- Comment #1 from chat95 at mac dot com  2007-01-10 10:48 -------
Created an attachment (id=12878)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12878&action=view)
a testcase actually used file. from octave-2.9.9


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2007-01-10 16:34 -------

% ./gendoc 
/libexec/ld-elf.so.1: ./gendoc: Undefined symbol "_ZNSo9_M_insertEPKcl"

This makes it sound like libstdc++'s ABI has changed slightly but just in a
forwards compatiable way.

Can you try to force using 4.2's libstdc++?


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet| x86_64-portbld-freebsd6.2  |x86_64-portbld-freebsd6.2
   GCC host triplet| x86_64-portbld-freebsd6.2  |x86_64-portbld-freebsd6.2
 GCC target triplet| x86_64-portbld-freebsd6.2  |x86_64-portbld-freebsd6.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[chat95 at mac dot com]

------- Comment #3 from chat95 at mac dot com  2007-02-05 02:34 -------
Sorry for long delay...
No, I'm using 4.2's libstdc++.
% g++42 -O -fno-strict-aliasing -pipe -o gendoc gendoc.cc ; ldd ./gendoc
./gendoc:
        libstdc++.so.6 => /usr/local/lib/gcc-4.1.2/libstdc++.so.6 (0x8006a3000)
        libm.so.4 => /lib/libm.so.4 (0x80089d000)
        libgcc_s.so.1 => /usr/local/lib/gcc-4.1.2/libgcc_s.so.1 (0x8009b9000)
        libc.so.6 => /lib/libc.so.6 (0x800ac5000)
% g++42 -pipe -o gendoc gendoc.cc ; ldd ./gendoc
./gendoc:
        libstdc++.so.6 => /usr/local/lib/gcc-4.1.2/libstdc++.so.6 (0x8006a1000)
        libm.so.4 => /lib/libm.so.4 (0x80089b000)
        libgcc_s.so.1 => /usr/local/lib/gcc-4.1.2/libgcc_s.so.1 (0x8009b7000)
        libc.so.6 => /lib/libc.so.6 (0x800ac3000)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[chat95 at mac dot com]

------- Comment #4 from chat95 at mac dot com  2007-02-05 02:39 -------
it seems amd64 only. with i386-portbld-freebsd6.2,
% g++42 -v
Using built-in specs.
Target: i386-portbld-freebsd6.2
Configured with: ./..//gcc-4.2-20070110/configure --disable-nls
--with-system-zlib --with-libiconv-prefix=/usr/local --with-gmp=/usr/local
--program-suffix=42 --libdir=/usr/local/lib/gcc-4.2.0
--with-gxx-include-dir=/usr/local/lib/gcc-4.2.0/include/c++/
--infodir=/usr/local/info/gcc42 --disable-rpath --prefix=/usr/local
i386-portbld-freebsd6.2
Thread model: posix
gcc version 4.2.0 20070110 (prerelease)

% g++42 -O -fno-strict-aliasing -pipe -o gendoc gendoc.cc ; ldd ./gendoc
./gendoc:
        libstdc++.so.6 => /usr/local/lib/gcc-4.2.0/libstdc++.so.6 (0x280ed000)
        libm.so.4 => /lib/libm.so.4 (0x281ca000)
        libgcc_s.so.1 => /usr/local/lib/gcc-4.2.0/libgcc_s.so.1 (0x281e0000)
        libc.so.6 => /lib/libc.so.6 (0x281ea000)
% ./gendoc
...
works.

% g++42 -pipe -o gendoc gendoc.cc ; ldd ./gendoc
./gendoc:
        libstdc++.so.6 => /usr/local/lib/gcc-4.2.0/libstdc++.so.6 (0x280ef000)
        libm.so.4 => /lib/libm.so.4 (0x281cc000)
        libgcc_s.so.1 => /usr/local/lib/gcc-4.2.0/libgcc_s.so.1 (0x281e2000)
        libc.so.6 => /lib/libc.so.6 (0x281ec000)
% ./gendoc
...
works.

it seems it DOES only happens to amd64...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423

[Bug c++/30423] compile with -O2 fails.

[chat95 at mac dot com]

------- Comment #5 from chat95 at mac dot com  2007-04-27 08:01 -------
Andrew Pinski: It seems ldconfig doesn't detect 4.2 libstdc++.
I removed gcc-4.1 and gcc-4.2 compiled executable now find correct version
of libstdc++...

marked as worksforme.
thanks for your attention.


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chat95 at mac dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30423