/* This function returns true if the interval [old,new]
* intersects the 'len'-sized interval below &libc.auxv
/* This function returns true if the interval [old,new]
* intersects the 'len'-sized interval below &libc.auxv
/* Expand the heap in-place if brk can be used, or otherwise via mmap,
* using an exponential lower bound on growth by mmap to make
* fragmentation asymptotically irrelevant. The size argument is both
/* Expand the heap in-place if brk can be used, or otherwise via mmap,
* using an exponential lower bound on growth by mmap to make
* fragmentation asymptotically irrelevant. The size argument is both