malloc_size alternative on Linux and Windows
c, gcc, linux, malloc, windows
Solution
On Windows, things that use the MS CRT can use _msize, on Linux you could try malloc_usable_size...
Problem
How can one tell, given a `void *` pointer, what is the size of a block allocated on this given address (previously allocated using `malloc`; in Linux and Windows)? I hope both systems surely store this kind of information somewhere. That is, alternative of `malloc_size` which exists on OSX/Darwin. Using gcc/mingw if it helps.