src/doc/nomicon/src/uninitialized.md

   1 # Working With Uninitialized Memory
   2
   3 All runtime-allocated memory in a Rust program begins its life as
   4 *uninitialized*. In this state the value of the memory is an indeterminate pile
   5 of bits that may or may not even reflect a valid state for the type that is
   6 supposed to inhabit that location of memory. Attempting to interpret this memory
   7 as a value of *any* type will cause Undefined Behavior. Do Not Do This.
   8
   9 Rust provides mechanisms to work with uninitialized memory in checked (safe) and
  10 unchecked (unsafe) ways.