From 20ab16178e45d07b4dc0104a7a98865d18440b62 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Fri, 9 Feb 2024 22:00:15 -0800
Subject: Support link-time constants. (#3564)

* Support link-time constants.

* Fix.

* Fix.
---
 source/slang/slang-check-decl.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

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

diff --git a/source/slang/slang-check-decl.cpp b/source/slang/slang-check-decl.cpp
index 3882994da..2a6ee8abc 100644
--- a/source/slang/slang-check-decl.cpp
+++ b/source/slang/slang-check-decl.cpp
@@ -1471,6 +1471,11 @@ namespace Slang
             }
             else
             {
+                if (varDecl->hasModifier<ExternModifier>())
+                {
+                    getSink()->diagnose(initExpr, Diagnostics::externValueCannotHaveInitializer);
+                }
+
                 initExpr = CheckExpr(initExpr);
 
                 // TODO: We might need some additional steps here to ensure
@@ -1484,7 +1489,7 @@ namespace Slang
 
                 _validateCircularVarDefinition(varDecl);
             }
-
+            
             // If we've gone down this path, then the variable
             // declaration is actually pretty far along in checking
             varDecl->setCheckState(DeclCheckState::DefinitionChecked);
-- 
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