1 files changed, 4 insertions, 0 deletions
diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index 82de2dae9..b12cdc213 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -3197,6 +3197,10 @@ BINARYEN_API BinaryenIndex BinaryenFunctionGetNumVars(BinaryenFunctionRef func);
 // specified `Function`.
 BINARYEN_API BinaryenType BinaryenFunctionGetVar(BinaryenFunctionRef func,
                                                  BinaryenIndex index);
+// Appends a local variable to the specified `Function`, returning its
+// index.
+BINARYEN_API BinaryenIndex BinaryenFunctionAddVar(BinaryenFunctionRef func,
+                                                  BinaryenType type);
 // Gets the number of locals within the specified function. Includes parameters.
 BINARYEN_API BinaryenIndex
 BinaryenFunctionGetNumLocals(BinaryenFunctionRef func);