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-rw-r--r--src/passes/OptimizeInstructions.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/passes/OptimizeInstructions.cpp b/src/passes/OptimizeInstructions.cpp
index 217312501..e48eecb72 100644
--- a/src/passes/OptimizeInstructions.cpp
+++ b/src/passes/OptimizeInstructions.cpp
@@ -1450,6 +1450,10 @@ struct OptimizeInstructions
}
void visitRefTest(RefTest* curr) {
+ if (curr->type == Type::unreachable) {
+ return;
+ }
+
// See above in RefCast.
if (!canBeCastTo(curr->ref->type.getHeapType(),
curr->rtt->type.getHeapType())) {