MemSet & MemCopy
- by pws5068
I'm writing a memory allocator, and I need a way to store an integer inside of a chunk of memory. This integer will represent the size of the block so I can navigate to the end given the pointer to the beginning.
Here's my test example:
head_ptr = (char*) malloc(4*1024*1024); // Allocate 4MB
memset(head_ptr,12345,sizeof(int)); // Set Address head_ptr = 12345
memcpy(testInt,head_ptr,sizeof(int)); // Set testInt = head_ptr
printf("testInt = %i",testInt);
This throws a segmentation fault on the second to last line.
Does what I'm trying to do make sense?
If so, what is the correct approach?
