Return an array By reference

Asked Jan 25 '19 at 16:29

Active Jan 25 '19 at 16:29

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I have the following method:

BIGNUM[] allocateBigNumArray(int size){
    BIGNUM array[size];
    return array;
}

That is called from this one:

  int MPIReceiveBigNum(BIGNUM **numbers, int size) {
     numbers=allocateBigNumArray(size);
  }

What I try to achieve is to allocate an N-sized array of BIGNUM and return it by reference in a similar manner such as OPENSSL, MPI does.

So my question is Should in MPIReceiveBigNum the numbers be of type BIGNUM**?

asked Jan 25 '19 at 16:29

2

This is not C.. – Eugene Sh. Jan 25 '19 at 16:30
You cannot return the address of a local (auto) variable from within a function, since the variable no longer exists after the function returns. – David R Tribble Jan 25 '19 at 17:37
@DavidRTribble: You very well "*could*", but you shouldn't for the reasons mentioned. ;) – alk Jan 25 '19 at 17:39
Assuming `allocateBigNumArray()` would savely allocate (what it does not), then it should be `*numbers = allocateBigNumArray(...`. – alk Jan 25 '19 at 17:41

0 Answers0