[Bug c++/51812] New: Virtual public inheritance leads to "undefined reference" in header files.

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From: "bredelin at ucla dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/51812] New: Virtual public inheritance leads to "undefined reference" in header files.
Date: Tue, 10 Jan 2012 14:32:00 -0000	[thread overview]
Message-ID: <bug-51812-4@http.gcc.gnu.org/bugzilla/> (raw)

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51812

             Bug #: 51812
           Summary: Virtual public inheritance leads to "undefined
                    reference" in header files.
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: bredelin@ucla.edu


Created attachment 26292
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26292
The c++ file that has linker errors.

Hi,

Using gcc 4.7 causes new linker errors that are not present in e.g. 4.5, 4.6,
or clang.  These linker errors make it impossible to use header files that do
not fully define some classes entirely in the header file.  

The errors look like:

% g++-4.7 all5.C 

/tmp/ccfEMWL0.o: In function `Object::print() const':
all5.C:(.text._ZNK6Object5printEv[_ZNK6Object5printEv]+0x58): undefined
reference to `demangle(std::string const&)'


/tmp/ccfEMWL0.o: In function `alphabet::compare(Object const&) const':
all5.C:(.text._ZNK8alphabet7compareERK6Object[_ZNK8alphabet7compareERK6Object]+0x81):
undefined reference to `typeinfo for alphabet'
all5.C:(.text._ZNK8alphabet7compareERK6Object[_ZNK8alphabet7compareERK6Object]+0xa5):
undefined reference to `operator==(alphabet const&, alphabet const&)'


/tmp/ccfEMWL0.o: In function `alphabet::~alphabet()':
all5.C:(.text._ZN8alphabetD1Ev[_ZN8alphabetD1Ev]+0xe): undefined reference to
`vtable for alphabet'
all5.C:(.text._ZN8alphabetD1Ev[_ZN8alphabetD1Ev]+0x26): undefined reference to
`vtable for alphabet'


/tmp/ccfEMWL0.o: In function `Triplets::Triplets(Triplets const&)':
all5.C:(.text._ZN8TripletsC1ERKS_[_ZN8TripletsC1ERKS_]+0x3d): undefined
reference to `VTT for Triplets'
all5.C:(.text._ZN8TripletsC1ERKS_[_ZN8TripletsC1ERKS_]+0x51): undefined
reference to `vtable for Triplets'
all5.C:(.text._ZN8TripletsC1ERKS_[_ZN8TripletsC1ERKS_]+0x69): undefined
reference to `vtable for Triplets'
/tmp/ccfEMWL0.o:(.rodata._ZTV18AminoAcidsWithStop[_ZTV18AminoAcidsWithStop]+0x48):
undefined reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTV18AminoAcidsWithStop[_ZTV18AminoAcidsWithStop]+0x60):
undefined reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTV18AminoAcidsWithStop[_ZTV18AminoAcidsWithStop]+0x70):
undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_10AminoAcids[_ZTV18AminoAcidsWithStop]+0x48):
undefined reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_10AminoAcids[_ZTV18AminoAcidsWithStop]+0x60):
undefined reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_10AminoAcids[_ZTV18AminoAcidsWithStop]+0x70):
undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_8alphabet[_ZTV18AminoAcidsWithStop]+0x30):
undefined reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_8alphabet[_ZTV18AminoAcidsWithStop]+0x48):
undefined reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_8alphabet[_ZTV18AminoAcidsWithStop]+0x60):
undefined reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC18AminoAcidsWithStop0_8alphabet[_ZTV18AminoAcidsWithStop]+0x70):
undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTV10AminoAcids[_ZTV10AminoAcids]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTV10AminoAcids[_ZTV10AminoAcids]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTV10AminoAcids[_ZTV10AminoAcids]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTC10AminoAcids0_8alphabet[_ZTV10AminoAcids]+0x30):
undefined reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTC10AminoAcids0_8alphabet[_ZTV10AminoAcids]+0x48):
undefined reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC10AminoAcids0_8alphabet[_ZTV10AminoAcids]+0x60):
undefined reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC10AminoAcids0_8alphabet[_ZTV10AminoAcids]+0x70):
undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTV3RNA[_ZTV3RNA]+0x48): undefined reference to
`alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTV3RNA[_ZTV3RNA]+0x60): undefined reference to
`alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTV3RNA[_ZTV3RNA]+0x70): undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_11Nucleotides[_ZTV3RNA]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_11Nucleotides[_ZTV3RNA]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_11Nucleotides[_ZTV3RNA]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_8alphabet[_ZTV3RNA]+0x30): undefined
reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_8alphabet[_ZTV3RNA]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_8alphabet[_ZTV3RNA]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC3RNA0_8alphabet[_ZTV3RNA]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTV3DNA[_ZTV3DNA]+0x48): undefined reference to
`alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTV3DNA[_ZTV3DNA]+0x60): undefined reference to
`alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTV3DNA[_ZTV3DNA]+0x70): undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_11Nucleotides[_ZTV3DNA]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_11Nucleotides[_ZTV3DNA]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_11Nucleotides[_ZTV3DNA]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_8alphabet[_ZTV3DNA]+0x30): undefined
reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_8alphabet[_ZTV3DNA]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_8alphabet[_ZTV3DNA]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC3DNA0_8alphabet[_ZTV3DNA]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTV11Nucleotides[_ZTV11Nucleotides]+0x48): undefined
reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTV11Nucleotides[_ZTV11Nucleotides]+0x60): undefined
reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTV11Nucleotides[_ZTV11Nucleotides]+0x70): undefined
reference to `alphabet::get_frequencies_from_counts(std::valarray<double>
const&, double) const'
/tmp/ccfEMWL0.o:(.rodata._ZTC11Nucleotides0_8alphabet[_ZTV11Nucleotides]+0x30):
undefined reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTC11Nucleotides0_8alphabet[_ZTV11Nucleotides]+0x48):
undefined reference to `alphabet::print() const'
/tmp/ccfEMWL0.o:(.rodata._ZTC11Nucleotides0_8alphabet[_ZTV11Nucleotides]+0x60):
undefined reference to `alphabet::setup_letter_classes()'
/tmp/ccfEMWL0.o:(.rodata._ZTC11Nucleotides0_8alphabet[_ZTV11Nucleotides]+0x70):
undefined reference to
`alphabet::get_frequencies_from_counts(std::valarray<double> const&, double)
const'
/tmp/ccfEMWL0.o:(.rodata._ZTI10AminoAcids[_ZTI10AminoAcids]+0x10): undefined
reference to `typeinfo for alphabet'
/tmp/ccfEMWL0.o:(.rodata._ZTI11Nucleotides[_ZTI11Nucleotides]+0x10): undefined
reference to `typeinfo for alphabet'
collect2: error: ld returned 1 exit status

All the errors go away if you change class alphabet to not have virtual public
inheritance, by removing the word "virtual".

next             reply	other threads:[~2012-01-10 14:32 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-10 14:32 bredelin at ucla dot edu [this message]
2012-01-10 14:33 ` [Bug c++/51812] " bredelin at ucla dot edu
2012-01-10 15:09 ` bredelin at ucla dot edu
2012-01-22 20:35 ` [Bug c++/51812] [4.7 regression] " paolo.carlini at oracle dot com
2012-01-22 21:42 ` pinskia at gcc dot gnu.org
2012-01-22 22:10 ` [Bug c++/51812] [4.7 regression] Virtual public inheritance and thunks " pinskia at gcc dot gnu.org
2012-01-23 17:07 ` jason at gcc dot gnu.org
2012-01-23 18:14 ` jason at gcc dot gnu.org
2012-01-23 23:14 ` bredelin at ucla dot edu
2012-01-24 14:32 ` jason at gcc dot gnu.org
2012-01-24 14:54 ` jason at gcc dot gnu.org
2012-01-29 19:01 ` bredelin at ucla dot edu

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