1 files changed, 1 insertions, 0 deletions
diff --git a/source/slang/slang-ir-diff-jvp.cpp b/source/slang/slang-ir-diff-jvp.cpp
index 7f5979a87..1597c80d1 100644
--- a/source/slang/slang-ir-diff-jvp.cpp
+++ b/source/slang/slang-ir-diff-jvp.cpp
@@ -2515,6 +2515,7 @@ struct BackwardDiffTranscriber
             newInst = builder->emitDiv(resultType, primalLeft, primalRight);
             break;
         default:
+            newInst = nullptr;
             getSink()->diagnose(origArith->sourceLoc,
                 Diagnostics::unimplemented,
                 "this arithmetic instruction cannot be differentiated");