From e3c7224142bff60635157e36c2cce91782b4aaeb Mon Sep 17 00:00:00 2001
From: Kenny Kerr <kenny@kennykerr.ca>
Date: Fri, 24 May 2024 10:44:38 -0500
Subject: [PATCH] E_POINTER

---
 crates/libs/core/src/inspectable.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/crates/libs/core/src/inspectable.rs b/crates/libs/core/src/inspectable.rs
index bd61b95e1e..44cefe4beb 100644
--- a/crates/libs/core/src/inspectable.rs
+++ b/crates/libs/core/src/inspectable.rs
@@ -56,6 +56,9 @@ impl RuntimeName for IInspectable {}
 impl IInspectable_Vtbl {
     pub const fn new<Identity: IUnknownImpl, Name: RuntimeName, const OFFSET: isize>() -> Self {
         unsafe extern "system" fn GetIids(_: *mut c_void, count: *mut u32, values: *mut *mut GUID) -> HRESULT {
+            if count.is_null() || values.is_null() {
+                return imp::E_POINTER;
+            }
             // Note: even if we end up implementing this in future, it still doesn't need a this pointer
             // since the data to be returned is type- not instance-specific so can be shared for all
             // interfaces.
@@ -64,11 +67,17 @@ impl IInspectable_Vtbl {
             HRESULT(0)
         }
         unsafe extern "system" fn GetRuntimeClassName<T: RuntimeName>(_: *mut c_void, value: *mut *mut c_void) -> HRESULT {
+            if value.is_null() {
+                return imp::E_POINTER;
+            }
             let h: HSTRING = T::NAME.into(); // TODO: should be try_into
             *value = transmute::<HSTRING, *mut c_void>(h);
             HRESULT(0)
         }
         unsafe extern "system" fn GetTrustLevel<T: IUnknownImpl, const OFFSET: isize>(this: *mut c_void, value: *mut i32) -> HRESULT {
+            if value.is_null() {
+                return imp::E_POINTER;
+            }
             let this = (this as *mut *mut c_void).offset(OFFSET) as *mut T;
             (*this).GetTrustLevel(value)
         }