jonatack

This document is currently optimized for MacOS. If you would like to help me add Linux equivalent commands, please let me know.

Debugging Bitcoin Core

This guide is designed to give beginners of C++ development and/or people new to the bitcoin core code base an overview of the tools available for debugging issues as well as giving hints where issues may trip you up.

Table of contents

jonatack

--- a/src/script/interpreter.cpp
+++ b/src/script/interpreter.cpp
@@ -504,6 +504,14 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript&
                     return set_error(serror, SCRIPT_ERR_MINIMALDATA);
                 }
                 stack.push_back(vchPushValue);
+                if ((flags & SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) && opcode == OP_FALSE) {
+                    auto pc_tmp = pc;
+                    opcodetype next_opcode;
+                    valtype dummy_data;

jonatack

How to compile Bitcoin Core from source on Linux Debian and run the unit and functional tests

Last updated: 16 March 2019

Hi! This article now lives at https://jonatack.github.io/articles/how-to-compile-bitcoin-core-and-run-the-tests where I will continue to update it. Cheers.

This is a simplified compilation of the various docs in https://github.com/bitcoin/bitcoin/tree/master/doc. Don't hesitate to read them for more information.

All steps are to be run from your terminal emulator, i.e. the command line.

jonatack

  <item>
      <name>Use the correct shift keys.</name>
      <identifier>private.correct_shift_keys</identifier>

      <autogen>--KeyToKey-- KeyCode::BACKQUOTE, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
      <autogen>--KeyToKey-- KeyCode::1, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
      <autogen>--KeyToKey-- KeyCode::2, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
      <autogen>--KeyToKey-- KeyCode::3, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>
      <autogen>--KeyToKey-- KeyCode::4, ModifierFlag::SHIFT_L, KeyCode::VK_NONE</autogen>

jonatack

Notes from reviewing Bitcoin Core PR #11413

"[wallet] [rpc] sendtoaddress/sendmany: Add explicit feerate option" by @kallewoof

bitcoin/bitcoin#11413

---

src/wallet/rpcwallet.cpp

jonatack

require 'benchmark/ips'

Benchmark.ips do |x|

  Property = Struct.new(:name, :original_name)

  PROPERTIES = [
    Property.new("Clo",   "Chloe"     ),
    Property.new("Jon",   "Jonathan"  ),
    Property.new("Kris",  "Kristin"   ),

jonatack

~/projects/bitcoin/bitcoin (pr/16202)$ git diff
diff --git a/src/net.cpp b/src/net.cpp
index d5e74d928f..d7371d80df 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -596,6 +596,9 @@ bool CNode::ReceiveMsgBytes(const char *pch, unsigned int nBytes, bool& complete
             if (i == mapRecvBytesPerMsgCmd.end())
                 i = mapRecvBytesPerMsgCmd.find(NET_MESSAGE_COMMAND_OTHER);
             assert(i != mapRecvBytesPerMsgCmd.end());
+

jonatack

~/projects/bitcoin/src ((HEAD detached at origin/pr/15996))$ bitcoin-cli -regtest help bumpfee
bumpfee "txid" ( options )

Bumps the fee of an opt-in-RBF transaction T, replacing it with a new transaction B.
An opt-in RBF transaction with the given txid must be in the wallet.
The command will pay the additional fee by reducing change outputs or adding inputs when necessary. It may add a new change output if one does not already exist.
If `totalFee` (DEPRECATED) is given, adding inputs is not supported, so there must be a single change output that is big enough or it will fail.
All inputs in the original transaction will be included in the replacement transaction.
The command will fail if the wallet or mempool contains a transaction that spends one of T's outputs.
By default, the new fee will be calculated automatically using estimatesmartfee.

jonatack

list of links for quick copypasting when debating on forums, also useful as a reading list

this was posted on reddit, link is https://www.reddit.com/r/Bitcoin/comments/7mh8c2/long_live_decentralized_bitcoin_a_reading_list/

Summary / The fundamental tradeoff

a trip to the moon requires a rocket with multiple stages by gmaxwell https://www.reddit.com/r/Bitcoin/comments/438hx0/a_trip_to_the_moon_requires_a_rocket_with/

bram cohen, creator of bittorrent, argues against a hard fork to a larger block size

jonatack

(pr/15943)$ test/functional/test_runner.py rpc_uptime --coverage
Temporary test directory at /tmp/test_runner_₿_🏃_20190515_133545
Initializing coverage directory at /tmp/coveragehsj4pafy
Remaining jobs: [rpc_uptime.py]
1/1 - rpc_uptime.py passed, Duration: 1 s

TEST          | STATUS    | DURATION

rpc_uptime.py | ✓ Passed  | 1 s