Thread: sizeof assertion problem

Hello,

In my program I would like to assert that the size of my array is what I told it to be as a precondition for a function.

The function is:

Code:

void getRow(char *token, char *input)
{
   assert(sizeof(*input)==MAX+TERMINATOR);
}

- Note TERMINATOR is a constant = 1 for the null terminator.

So this assertion fails. My guess is that it's because the input points to only 1 char. I believe my guess is correct because

Code:

assert(sizeof(*input)==sizeof(char));

passes.

In the calling function input is not a pointer but a char array.
In the calling function this assertion works:

Code:

char input[MAX+TERMINATOR];
assert(sizeof(input)==MAX+TERMINATOR);

Is there a way to have an assertion like this in the getRow function or is it just not possible?