Drop call arguments _after_ the call

wasmx · Oct 5, 2020 · a2dd39b · a2dd39b
1 parent f61a8f1
commit a2dd39b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/fizzy/execute.cpp b/lib/fizzy/execute.cpp
@@ -432,13 +432,14 @@ bool invoke_function(const FuncType& func_type, const F& func, Instance& instanc
     const auto num_args = func_type.inputs.size();
     assert(stack.size() >= num_args);
     span<const Value> call_args{stack.rend() - num_args, num_args};
-    stack.drop(num_args);
 
     const auto ret = func(instance, call_args, depth + 1);
     // Bubble up traps
     if (ret.trapped)
         return false;
 
+    stack.drop(num_args);
+
     const auto num_outputs = func_type.outputs.size();
     // NOTE: we can assume these two from validation
     assert(num_outputs <= 1);