[Osi] Adding a row provokes a segfault

[Christophe-Marie Duquesne]

You are definetely right. No bugs.

Sorry.

On Thu, Jul 22, 2010 at 5:52 PM, Stefan Vigerske
<stefan at math.hu-berlin.de> wrote:
> Hi,
>
> you now seem to add a column with row entries before having added the
> row. :-)
> My guess is that OsiClp does not allow it (since it does not make much
> sense), while OsiGlpk is less strict.
> Try adding columns without row entries first, then add rows with column
> entries.
> Or add rows without column entries, and then add columns with row entries.
>
> Stefan
>
> Christophe-Marie Duquesne wrote:
>> Adding a column first does not solve this:
>>
>> This program throws a CoinError:
>>
>> #include <coin/OsiSolverInterface.hpp>
>> #include <coin/OsiClpSolverInterface.hpp>
>> #include <coin/CoinPackedVector.hpp>
>>
>>
>> int main(int argc, const char *argv[])
>> {
>>     OsiSolverInterface * solver = new OsiClpSolverInterface();
>>
>>     CoinPackedVector vector;
>>     vector.insert(1, 1);
>>
>>     solver->addCol(vector, 0, 1, 1);
>>
>>     delete solver;
>>     return 0;
>> }
>>
>> (gdb) bt
>> #0  0x00110416 in __kernel_vsyscall ()
>> #1  0x005fcd11 in raise () from /lib/libc.so.6
>> #2  0x005fe5ea in abort () from /lib/libc.so.6
>> #3  0x00d41397 in __gnu_cxx::__verbose_terminate_handler() () from
>> /usr/lib/libstdc++.so.6
>> #4  0x00d3f226 in ?? () from /usr/lib/libstdc++.so.6
>> #5  0x00d3f263 in std::terminate() () from /usr/lib/libstdc++.so.6
>> #6  0x00d3f3a2 in __cxa_throw () from /usr/lib/libstdc++.so.6
>> #7  0x001a0e54 in OsiClpSolverInterface::freeCachedResults
>> (this=0x804afa0) at OsiClpSolverInterface.cpp:4088
>> #8  0x0019a08c in OsiClpSolverInterface::addCol (this=0x804afa0,
>> vec=..., collb=0, colub=1, obj=1) at OsiClpSolverInterface.cpp:2863
>> #9  0x080488ad in main ()
>>
>
>
> --
> Stefan Vigerske
> Humboldt University Berlin, Numerical Mathematics
> http://www.math.hu-berlin.de/~stefan
>



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Christophe-Marie Duquesne
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