Question

I have a variable declared as const char *. I have allocated memory for that using malloc(). After using it, I want to free that memory using free(). But I am not able to do that and it gives me error that “Attempting to write to protected memory”. How do I free the memory allocated?

Thanks,
Rakesh.

Answer 1

If you’re getting that error then you’re doing something wrong and you’ll need to post the code so we can figure out what it is. For what it’s worth, you can free a const char* as evidenced in the following code, which compiles and executes perfectly:

#include <cstdlib>
int main (void) {
    const char *x = (const char*) malloc (100);
    free ((void*) x);
    return 0;
}