From d245c72f2a92a74ccda83f41758c1948ae5132d3 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Wed, 24 Aug 2022 10:56:53 -0700
Subject: Compiler time evaluation of all int and bool operators. (#2376)

* Compiler time evaluation of all int and bool operators.

* Fix linux compile error.

* Fix.

Co-authored-by: Yong He <yhe@nvidia.com>
---
 source/slang/slang-ast-type.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'source/slang/slang-ast-type.cpp')

diff --git a/source/slang/slang-ast-type.cpp b/source/slang/slang-ast-type.cpp
index 664c940a8..a84f04a32 100644
--- a/source/slang/slang-ast-type.cpp
+++ b/source/slang/slang-ast-type.cpp
@@ -387,15 +387,19 @@ Val* ArrayExpressionType::_substituteImplOverride(ASTBuilder* astBuilder, Substi
 {
     int diff = 0;
     auto elementType = as<Type>(baseType->substituteImpl(astBuilder, subst, &diff));
-    auto arrlen = as<IntVal>(arrayLength->substituteImpl(astBuilder, subst, &diff));
-    SLANG_ASSERT(arrlen);
+    IntVal* newArrayLength = nullptr;
+    if (arrayLength)
+    {
+        newArrayLength = as<IntVal>(arrayLength->substituteImpl(astBuilder, subst, &diff));
+        SLANG_ASSERT(newArrayLength);
+    }
     if (diff)
     {
         *ioDiff = 1;
         auto rsType = getArrayType(
             astBuilder,
             elementType,
-            arrlen);
+            newArrayLength);
         return rsType;
     }
     return this;
-- 
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