Custom Query (545 matches)

A user reported obvious memory leak when solving many MIP problem with a fresh CplexMip instance for each. In addition valgrind report the following on CplexMip:

==10084== Conditional jump or move depends on uninitialised value(s)
==10084==    at 0x8104C32: lemon::CplexEnv::~CplexEnv() (cplex.cc:66)
==10084==    by 0x81051C8: lemon::CplexBase::~CplexBase() (cplex.cc:94)
==10084==    by 0x8108C8E: lemon::CplexMip::~CplexMip() (cplex.cc:880)

The reason is that the constructor of CplexEnv does not initialize the target of the _cnt pointer when it is allocated.

The attached patch​ fixes the following bug.

• Newer versions of CPLEX seem to require the dl library (whatever it is)
• The implementation of adding new range-type constraints (e.g. 1<=x1+x2<=3) is wrong.
• The row and column indices are swapped in the matrix query of ClpLp

[fe4ff72e2f14b62c5ff8f565db888186ab490275/lemon] broke the build using cmake 2.8, which does not recognize the CMP0048 policy. The attached patch fixes it for me (well, it fixes this particular regression).