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use core::mem;
#[inline]
pub fn zst<T>(len: usize) -> bool {
mem::size_of::<T>() == 0 || len == 0
}
#[inline]
pub fn check_ptr<T>(p: *const T, len: usize) {
debug_assert!((p as usize) % mem::align_of::<T>() == 0, "unaligned ptr");
assert!(zst::<T>(len) || !p.is_null(), "NULL ptr");
}
#[inline]
pub fn must_succeed<T>(p: *mut T) -> *mut T {
assert!(!p.is_null(), "allocation failure");
p
}
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