From 509e36b62de7578843abc2547921beadff7a3ce0 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Thu, 25 Jun 2020 14:01:33 -0700
Subject: Remove interfaceType operand from lookup_witness_method inst

---
 source/slang/slang-emit-cpp.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'source/slang/slang-emit-cpp.cpp')

diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index a449a2c56..f895b1119 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -1790,9 +1790,9 @@ void CPPSourceEmitter::_maybeEmitWitnessTableTypeDefinition(
             }
             m_writer->emit(");\n");
         }
-        else if (auto constraintInterfaceType = as<IRInterfaceType>(entry->getRequirementVal()))
+        else if (auto witnessTableType = as<IRWitnessTableType>(entry->getRequirementVal()))
         {
-            emitType(constraintInterfaceType);
+            emitType((IRType*)witnessTableType->getConformanceType());
             m_writer->emit("* ");
             m_writer->emit(getName(entry->getRequirementKey()));
             m_writer->emit(";\n");
-- 
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