Copy back data from external integer arrays

[Willi Braun]

following model generates memory leaks for Integer values.

system("echo \"void extIntegerArray(int* a, int n, int* out){int i;for(i=0;i<n;i++){out[i] = a[i]+i;}}\" > ExtIntegerArrayFunc.c");
loadString("

function extIntegerArray
  input Integer x[:];
  input Integer s;
  output Integer y[size(x,1)];
  external \"C\" extIntegerArray(x,s,y) annotation(Library=\"libExtIntegerArrayFunc1_ext.a\");
end extIntegerArray;

model A
  function extIntArray
    input Integer x[:];
    input Integer s;
    output Integer y[size(x,1)];
  algorithm
    y := extIntegerArray(x,s);
  end extIntArray;

  Integer ints[:] = {integer(2*time),integer(1*time),3,5,7,8,3};
  Integer ou1[size(ints,1)];

equation
  ou1 = extIntArray(ints,size(ints,1));
end A;");
getErrorString();

system("gcc -c -o libExtIntegerArrayFunc1_ext.a ExtIntegerArrayFunc.c");
simulate(A, stopTime=0.1, numberOfIntervals=2);
system("valgrind ./A");
getErrorString();

it's the usage of data_of_integer_array in util/inter_array.h that produces memory leaks.

[Martin Sjölund]

A memory leak is when we allocate memory that we cannot reclaim. In this case, we assign to one piece of allocated memory, and subsequently free it without copying it to the correct place.
I have a fix in place; running the testsuite overnight.

[Martin Sjölund]

Fixed in r15872