AK+Everywhere: Make FixedArray OOM-safe

FixedArray now doesn't expose any infallible constructors anymore.
Rather, it exposes fallible methods. Therefore, it can be used for
OOM-safe code.
This commit also converts the rest of the system to use the new API.
However, as an example, VMObject can't take advantage of this yet,
as we would have to endow VMObject with a fallible static
construction method, which would require a very fundamental change
to VMObject's whole inheritance hierarchy.

1 files changed, 2 insertions, 2 deletions

diff --git a/Kernel/Memory/VMObject.cpp b/Kernel/Memory/VMObject.cpp
index 7ccb723180..78db6f2d1b 100644
--- a/Kernel/Memory/VMObject.cpp
+++ b/Kernel/Memory/VMObject.cpp
@@ -18,13 +18,13 @@ SpinlockProtected<VMObject::AllInstancesList>& VMObject::all_instances()
 }
 
 VMObject::VMObject(VMObject const& other)
-    : m_physical_pages(other.m_physical_pages)
+    : m_physical_pages(other.m_physical_pages.must_clone_but_fixme_should_propagate_errors())
 {
     all_instances().with([&](auto& list) { list.append(*this); });
 }
 
 VMObject::VMObject(size_t size)
-    : m_physical_pages(ceil_div(size, static_cast<size_t>(PAGE_SIZE)))
+    : m_physical_pages(FixedArray<RefPtr<PhysicalPage>>::must_create_but_fixme_should_propagate_errors(ceil_div(size, static_cast<size_t>(PAGE_SIZE))))
 {
     all_instances().with([&](auto& list) { list.append(*this); });
 }