From deb130645e8538eed8fb9f682de64e2dd329473d Mon Sep 17 00:00:00 2001
From: Ellie Hermaszewska <ellieh@nvidia.com>
Date: Fri, 21 Apr 2023 14:05:49 +0800
Subject: Add warning for returning without initializing out parameter (#2807)

* Add warning for returning without initializing out parameter

* Add unused prelude function to squash uninitialized out variable warnings
---
 source/slang/core.meta.slang | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'source/slang/core.meta.slang')

diff --git a/source/slang/core.meta.slang b/source/slang/core.meta.slang
index 849e4c642..5265d6cb6 100644
--- a/source/slang/core.meta.slang
+++ b/source/slang/core.meta.slang
@@ -2649,6 +2649,15 @@ __generic<T, U>
 __intrinsic_op($(kIROp_Reinterpret))
 T reinterpret(U value);
 
+// Use an otherwise unused value
+//
+// This can be used to silence the warning about returning before initializing
+// an out paramter.
+__generic<T>
+[__readNone]
+[ForceInline]
+void unused(inout T){}
+
 // Specialized function
 
 /// Given a string returns an integer hash of that string.
-- 
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