From c1e684dc12d0a86573a905d54d4f81fce921987a Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Sat, 13 May 2017 04:22:00 -0700
Subject: [PATCH] rpc: throw on no addresses for miner.

---
 lib/http/rpc.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/http/rpc.js b/lib/http/rpc.js
index 4f0be9c0..19ec3563 100644
--- a/lib/http/rpc.js
+++ b/lib/http/rpc.js
@@ -1582,6 +1582,11 @@ RPC.prototype.setGenerate = co(function* setGenerate(args, help) {
   if (help || args.length < 1 || args.length > 2)
     throw new RPCError(errs.MISC_ERROR, 'setgenerate mine ( proclimit )');
 
+  if (mine && this.miner.addresses.length === 0) {
+    throw new RPCError(errs.MISC_ERROR,
+      'No addresses available for coinbase.');
+  }
+
   this.mining = mine;
   this.procLimit = limit;
 
@@ -1603,6 +1608,11 @@ RPC.prototype.generate = co(function* generate(args, help) {
   if (help || args.length < 1 || args.length > 2)
     throw new RPCError(errs.MISC_ERROR, 'generate numblocks ( maxtries )');
 
+  if (this.miner.addresses.length === 0) {
+    throw new RPCError(errs.MISC_ERROR,
+      'No addresses available for coinbase.');
+  }
+
   return yield this.mineBlocks(blocks, null, tries);
 });