Copying elements between two void *

[dayalsoap]

I have two void type arrays

void * shared;
void * private;

I want to copy elements from the private to the shared, but when I try, I get compile errors

int i;
for(i = 0; i<size; i++)
{
   shared[i] = private[i];
}

I get

rvm.c:253: warning: dereferencing ‘void *’ pointer
rvm.c:253: warning: dereferencing ‘void *’ pointer
rvm.c:253: error: invalid use of void expression


If I try

int i;
for(i = 0; i<size; i++)
{
   shared + i = private +i;
}

I get

rvm.c:253: error: invalid lvalue in assignment


it does not suffice to simply re-assign the pointers, as shared is allocated with mmap (with shared) and private is mmap (with private)

Thank you so much!

[anduril462]

How about using memcpy? Something like: memcpy(shared, private, size) should do the trick.

[dayalsoap]

How about using memcpy? Something like: memcpy(shared, private, size) should do the trick.

Brilliant. Thank you. It works