From c6c9557ff28feece54265fcff82478156afbe67f Mon Sep 17 00:00:00 2001
From: Google Team Member <genai-sdk-bot@google.com>
Date: Tue, 13 Jan 2026 00:51:18 -0800
Subject: [PATCH] fix: Always use a mutable HashMap for default function
 arguments

PiperOrigin-RevId: 855577452
---
 .../src/main/java/com/google/adk/flows/llmflows/Functions.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/core/src/main/java/com/google/adk/flows/llmflows/Functions.java b/core/src/main/java/com/google/adk/flows/llmflows/Functions.java
index 950d4c5eb..ed4ebc882 100644
--- a/core/src/main/java/com/google/adk/flows/llmflows/Functions.java
+++ b/core/src/main/java/com/google/adk/flows/llmflows/Functions.java
@@ -263,8 +263,7 @@ private static Function<FunctionCall, Maybe<Event>> getFunctionCallMapper(
                 invocationContext));
       }
 
-      Map<String, Object> functionArgs =
-          functionCall.args().orElse(isLive ? new HashMap<>() : ImmutableMap.of());
+      Map<String, Object> functionArgs = functionCall.args().orElse(new HashMap<>());
 
       Maybe<Map<String, Object>> maybeFunctionResult =
           maybeInvokeBeforeToolCall(invocationContext, tool, functionArgs, toolContext)