Segmentation fault

[thewoz]

Hi,

I compiled the code with:

   g++ -std=c++11 -O3 -Wall example.cpp -o run

the compiler give me back the following message:

In file included from example.cpp:5:
 In file included from ./Galgo.hpp:77:
./Chromosome.hpp:149:49: warning: unsequenced modification and access to 'i' [-Wunsequenced]
  param[i] = x->decode(chr.substr(ptr->idx[i++], x->size()));
        ~                                   ^
./Population.hpp:107:18: note: in instantiation of member function 'galgo::Chromosome<double>::evaluate' requested here
  curpop[0]->evaluate();
             ^
./GeneticAlgorithm.hpp:195:8: note: in instantiation of member function 'galgo::Population<double>::creation' requested here
  pop.creation();
   ^
 example.cpp:49:7: note: in instantiation of member function 'galgo::GeneticAlgorithm<double>::run' requested here
   ga.run();
  ^      
 1 warning generated.

then I try ./run

This is the output:

Running Genetic Algorithm...
----------------------------
Generation =  0 | X1 =   0.00000 | X2 =   0.99405 | F(x) =    -99.81334
Segmentation fault: 11

What I'm missing?

[thewoz]

Some time the error is here:

    // moving new population into current population for next generation
    curpop = std::move(newpop);

others time here:

  // encoding parameter random value
  std::string str = x->encode();

However seem that the real error comes from the line:

  // decoding chromosome: converting chromosome string into a real value
  param[i] = x->decode(chr.substr(ptr->idx[i++], x->size()));

I.e. the line that generate the warning in the first place

[thewoz]

I solve in this way:

  param[i] = x->decode(chr.substr(ptr->idx[i], x->size()));
  i++;