Function try_alloc

crates/core/src/error/boxed.rs:14–24

(layout: Layout)

/// Same as `alloc::alloc::alloc`: layout must have non-zero size.
#[inline]
pub(crate) unsafe fn try_alloc(layout: Layout) -> Result<NonNull<u8>, OutOfMemory> {
    // Safety: same as our safety conditions.
    debug_assert!(layout.size() > 0);
    let ptr = unsafe { std_alloc::alloc::alloc(layout) };

    if let Some(ptr) = NonNull::new(ptr) {
        Ok(ptr)
    } else {
        Err(OutOfMemory::new(layout.size()))
    }
}

/// Create a `Box<T>`, or return an `OutOfMemory` error.
#[inline]