2 files changed, 5 insertions, 0 deletions
diff --git a/src/wasm/wasm-binary.cpp b/src/wasm/wasm-binary.cpp
index ef564db6e..0ae17f47c 100644
--- a/src/wasm/wasm-binary.cpp
+++ b/src/wasm/wasm-binary.cpp
@@ -7191,6 +7191,8 @@ bool WasmBinaryBuilder::maybeVisitStringMeasure(Expression*& out,
     }
   } else if (code == BinaryConsts::StringMeasureWTF16) {
     op = StringMeasureWTF16;
+  } else if (code == BinaryConsts::StringIsUSV) {
+    op = StringMeasureIsUSV;
   } else {
     return false;
   }
diff --git a/src/wasm/wasm-stack.cpp b/src/wasm/wasm-stack.cpp
index 9a5db2928..e1b093b26 100644
--- a/src/wasm/wasm-stack.cpp
+++ b/src/wasm/wasm-stack.cpp
@@ -2276,6 +2276,9 @@ void BinaryInstWriter::visitStringMeasure(StringMeasure* curr) {
     case StringMeasureWTF16:
       o << U32LEB(BinaryConsts::StringMeasureWTF16);
       break;
+    case StringMeasureIsUSV:
+      o << U32LEB(BinaryConsts::StringIsUSV);
+      break;
     default:
       WASM_UNREACHABLE("invalid string.new*");
   }