Function std::ptr::read
[−]
[src]
pub unsafe fn read<T>(src: *const T) -> T
Reads the value from src`srcwithout moving it. This leaves the memory in` without moving it. This leaves the
memory in src`src` unchanged.
Safety
Beyond accepting a raw pointer, this is unsafe because it semantically
moves the value out of src`srcwithout preventing further usage of` without preventing further usage of src`src. If`.
If T`Tis not` is not Copy`Copy, then care must be taken to ensure that the value at`, then care must be taken to ensure that the value at
src`srcis not used before the data is overwritten again (e.g. with` is not used before the data is overwritten again (e.g. with write`write,`,
zero_memory`zero_memory, or`, or copy_memory`copy_memory). Note that`). Note that *src = foo`*src = foocounts as a use because it will attempt to drop the value previously at` counts as a use
because it will attempt to drop the value previously at *src`*src`.