From 65c2e7f1ccc6cdb5daec343c7e32b4a9dc463ae4 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Tue, 12 Apr 2022 15:23:53 -0700
Subject: Support `[DllImport]` (#2181)

* Support `[DllImport]`

* Fix.

* Fix.

* Fix array type emit in cpp.

* Fix.

* Fix.

* Fix

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-check-conversion.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'source/slang/slang-check-conversion.cpp')

diff --git a/source/slang/slang-check-conversion.cpp b/source/slang/slang-check-conversion.cpp
index 855590472..a1935d65c 100644
--- a/source/slang/slang-check-conversion.cpp
+++ b/source/slang/slang-check-conversion.cpp
@@ -753,6 +753,18 @@ namespace Slang
             return true;
         }
 
+        // nullptr_t can be cast into any pointer type.
+        if (as<NullPtrType>(fromType) && as<PtrType>(toType))
+        {
+            if (outCost)
+            {
+                *outCost = kConversionCost_None;
+            }
+            if (outToExpr)
+                *outToExpr = fromExpr;
+            return true;
+        }
+
         // If we are casting to an interface type, then that will succeed
         // if the "from" type conforms to the interface.
         //
-- 
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