If a node is started with a set of network upgrades that don't match the
serialized chain (such as when we implement NU rollbacks on testnet),
RewindBlockIndex will disconnect each block in the chain until it
reaches the most recent block that agrees with the node's set of network
upgrades. However, the blocks themselves should be disconnected using
the consensus branch ID that they were connected with, which is
persisted alongside the chain and reconstructed in LoadBlockIndex.
librustzcash: make the header C compatible
The `librustzcash.h` file is compatible with both languages. However, only C++ is supported at the moment. By relying on the preprocessor to include or not the `extern "C"` piece, the interface becomes compatible with both.
Golden testing to verify no-reindex network upgrades.
This test was introduced to provide us a way to test network upgrades against previously-serialized versions of block and block-index data. At present the only thing that is checked is that the nodes start correctly after upgrading.
The commit history of this branch is built such that each persisted database artifact is constructed in a commit which has the correct history for constructing that particular artifact - basically, you get that artifact (disregarding randomness) by checking out that commit and creating it using the zcashd built from that commit.
Release v3.0.0-rc1
This is the release candidate for 3.0.0 Heartwood.
EOS halt manually configured to be (roughly) September 15, which is 2808 hours away (at the time of writing this) so with 48 blocks per hour, 2808 * 48 plus the current height 838929 equals 973713.
Enable Heartwood activation on mainnet
This sets the Heartwood activation height to `903000`, which follows the deprecation height of `v2.1.2-3` (which is set to deprecate on block `901475`, roughly 31 hours earlier, sometime mid-July).
Fix a null pointer dereference that occurs when formatting an error message
This fixes a bug in the error message printout for the case when we have sufficient chain work, but an expected network upgrade has not activated.
These are reserved for all uses (including member function names) in C++,
and their use is technically undefined behaviour:
https://stackoverflow.com/a/228797/393146
Co-authored-by: Daira Hopwood <daira@jacaranda.org>
Jack Grigg
Homu
therealyingtong
Taylor Hornby
Sean Bowe
Kris Nuttycombe
Alfredo Garcia
Daira Hopwood
Danny Willems