Originally posted by: Eglantine

Hello everybody,

 I have the following warnings, when I increase the warning level to / W4. Honestly speaking, I do not know how should I fix it. I am using cplex concert technology 12.6. Besides, I am doing c++ implementations in visual studio 2010.

Thank you very much in advance.

1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloallocator.h(151): warning C4512: 'IloFixedSizeAllocatorI' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloallocator.h(68) : see declaration of 'IloFixedSizeAllocatorI'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloallocator.h(219): warning C4512: 'IloMemory' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloallocator.h(154) : see declaration of 'IloMemory'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloalg.h(198): warning C4512: 'IloAlgorithm::NotExtractedException' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloalg.h(186) : see declaration of 'IloAlgorithm::NotExtractedException'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(474): warning C4512: 'IloSetRangeArrayBounds' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(454) : see declaration of 'IloSetRangeArrayBounds'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(493): warning C4512: 'IloSetRangeArrayLbs' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(476) : see declaration of 'IloSetRangeArrayLbs'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(512): warning C4512: 'IloSetRangeArrayUbs' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(495) : see declaration of 'IloSetRangeArrayUbs'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(558): warning C4512: 'IloSetRangeCoefs' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(536) : see declaration of 'IloSetRangeCoefs'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(1447): warning C4512: 'IloSetObjCoefs' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(1422) : see declaration of 'IloSetObjCoefs'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(1800): warning C4512: 'IloSetForAllRangeLinearCoefs' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/ilolinear.h(1783) : see declaration of 'IloSetForAllRangeLinearCoefs'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(104): warning C4512: 'IloGenerator::MultipleDefinition' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(95) : see declaration of 'IloGenerator::MultipleDefinition'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(114): warning C4512: 'IloGenerator::OutOfScope' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(106) : see declaration of 'IloGenerator::OutOfScope'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(259): warning C4512: 'IloSetNumVarArrayBounds' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\concert\include\ilconcert/iloexpressioni.h(241) : see declaration of 'IloSetNumVarArrayBounds'
1>C:\Program Files\IBM\ILOG\CPLEX_Studio126\cplex\include\ilcplex/ilocplexi.h(4835): warning C4512: 'IloCplexI' : assignment operator could not be generated
1>          C:\Program Files\IBM\ILOG\CPLEX_Studio126\cplex\include\ilcplex/ilocplexi.h(3559) : see declaration of 'IloCplexI'

Sorry for the very long delay in answering this questions, somehow I completely missed this question and just stumbled upon it now.

The warning is harmless and can be ignored. You may want to disable this particular warning in the compiler settings. We will see what we can do to avoid this warning in the future.