From 11117dacbe94a7076ad28f7c92a9e1b2492d2b67 Mon Sep 17 00:00:00 2001
From: Mike Hearn <hearn@google.com>
Date: Mon, 26 Mar 2012 15:41:56 +0200
Subject: [PATCH] Be super-explicit in the error message for calling
 getFromAddress on a coinbase transaction input.

---
 .../main/java/com/google/bitcoin/core/TransactionInput.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/com/google/bitcoin/core/TransactionInput.java b/core/src/main/java/com/google/bitcoin/core/TransactionInput.java
index 8a7a04f9..5ad9ed44 100644
--- a/core/src/main/java/com/google/bitcoin/core/TransactionInput.java
+++ b/core/src/main/java/com/google/bitcoin/core/TransactionInput.java
@@ -170,7 +170,8 @@ public class TransactionInput extends ChildMessage implements Serializable {
      */
     public Address getFromAddress() throws ScriptException {
         if (isCoinBase()) {
-            throw new ScriptException("coinbase transaction");
+            throw new ScriptException(
+                    "This is a coinbase transaction which generates new coins. It does not have a from address.");
         }
         return getScriptSig().getFromAddress();
     }