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@ -0,0 +1,382 @@
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Notable changes
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===============
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Migration to Clang and static libc++
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------------------------------------
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`zcashd` now builds its C++ (and C) dependencies entirely with a pinned version
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of Clang, and statically links libc++ instead of dynamically linking libstdc++.
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This migration enables us to reliably use newer C++ features while supporting
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older LTS platforms, be more confident in the compiler's optimisations, and
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leverage security features such as sanitisers and efficient fuzzing. In future,
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this will also allow optimizing across the boundary between Rust and C++.
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The system compiler is still used to compile a few native dependencies (used by
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the build machine to then compile `zcashd` for the target machine). These will
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likely also be migrated to use the pinned Clang in a future release.
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Fast sync for initial block download
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------------------------------------
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The `-ibdskiptxverification` flag allows faster synchronization during initial
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block sync, by skipping transaction verification and instead verifying only PoW.
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Note that this mode requires checkpoints to be enabled, to make sure that each
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block under inspection is an ancestor of the latest checkpoint.
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Convenient testing for invalid note plaintexts
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----------------------------------------------
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After the mainnet activation of Canopy (block 1046400), correct wallet software
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will no longer produce v1 note plaintexts (with a lead byte of `0x01`). However,
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v1 note plaintexts will continue to be accepted for a grace period of 32256
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blocks (about 4 weeks), as specified in [ZIP 212](https://zips.z.cash/zip-0212).
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The new `receiveunsafe` log category complains if an invalid note plaintext is
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received.
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Additional lightwalletd and light client RPCs
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---------------------------------------------
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- lightwalletd is now able to retrieve all UTXOs related to a t-address through
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the `getaddressutxos` RPC. (Previously, this was only available to the Insight
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Explorer.)
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- The new `z_gettreestate` RPC returns the Sprout and Sapling treestate at a
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given block height or block hash. This makes it easier for light clients to
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generate checkpoints.
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Update/removal of several cryptographic dependencies
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----------------------------------------------------
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This release updates secp256k1 to enable the GLV endomorphism optimisation by
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default, after the recent expiry of the GLV patents. It also removes OpenSSL,
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and replaces libsodium BLAKE2b usage with the [blake2b_simd Rust crate](https://github.com/oconnor663/blake2_simd).
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Changelog
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=========
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Aditya Kulkarni (1):
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Add a config option to skip transaction verification in IBD mode
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Ahmad Kazi (1):
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[Trivial] Add BITCOIN_FS_H endif footer in fs.h
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Alfredo Garcia (9):
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add timestamp to warnings
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change order of returned pair, fix compatibility issue
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revert result key change, fix calls to getime
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add shielded balance to getwalletinfo
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Add null check to feof.
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allow wallet file to be outside datadir
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Apply suggestions from code review
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simplify TestBlockValidity
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update function comment
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Ben Wilson (4):
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Added libtinfo5 to ci builder containers
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Added Arch and Centos to script, added libtinfo5 for arch
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Fixed Centos and Arch python requirements
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Build python for debian9 and ubuntu16.04
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Carl Dong (3):
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depends: Build secondary deps statically.
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depends: Purge libtool archives
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scripted-diff: Run scripted-diff in subshell
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Cory Fields (8):
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leveldb: integrate leveldb into our buildsystem
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build: No need to check for leveldb atomics
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build: out-of-tree fixups
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leveldb: enable runtime-detected crc32 instructions
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build: verify that the assembler can handle crc32 functions
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httpserver: use a future rather than relying on boost's try_join_for
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httpserver: replace boost threads with std
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devtools: add script to verify scriptable changes
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Daira Hopwood (29):
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CBufferedFile: assert that Fill() is only called when nReadPos == nSrcPos, and simplify based on that assumption.
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CBufferedFile: use eof() method rather than feof(src) in error message.
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Make some conversions explicit to reduce sanitizer warnings.
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Rename z_*_balance fields of getwalletinfo output to shielded_*_balance
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Fix grammar in error messages.
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Ensure that the absolute path used in the test definitely does not exist.
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Line-wrap addition to README.md
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Minor additional OpenSSL scouring.
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Avoid undefined behaviour in scriptnum tests.
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Add assertions for CScriptNum[10] +/- int64_t to avoid the possibility of UB.
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It's unnecessary to pass int64_t by const reference.
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Cosmetics in CScriptNum code and tests.
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Add logging when we receive an invalid note plaintext (using the "receiveunsafe" log category).
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Fix a new warning about use of boost::bind placeholders after updating Boost. closes #4774
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Beef up the CoC to address use of dog-whistles.
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Fix warnings surfaced by compiling with clang++.
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Use the current time as the timestamp if we override a misc warning.
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qa/zcash/full_test_suite.py: changes needed for macOS. fixes #4785
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qa/zcash/full_test_suite.py: print immediately if a test fails.
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log(x)/log(2.0) can be written as log2(x).
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Fix integer types in DisplayDuration.
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Rename `time` to `duration` in `DisplayDuration`.
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Update contrib/devtools/symbol-check.py
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contrib/devtools/symbol-check.py: add info about Fedora-based distributions.
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Comment and error message cleanups for transaction checks.
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Add new copyright entries for build-aux/m4/ax_cxx_compile_stdcxx.m4
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Fix death gtests on macOS by switching to the threadsafe style.
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Fix an error reporting bug in "Checksum missing or mismatched ..."
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Rename the FS_ZIP214_ECC funding stream to FS_ZIP214_BP. See also https://github.com/zcash/zips/pull/412 .
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Dimitris Apostolou (5):
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Remove reference to cargo-checksum.sh
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Fix typos
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Fix zeromq warning
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Remove deprecated init.md
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Remove Bitcoin release notes
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Dimitris Tsapakidis (1):
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Fixed multiple typos
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Hennadii Stepanov (1):
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Enable ShellCheck rules
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Jack Grigg (79):
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Assorted small changes to the locked pool manager
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wallet: Add ANY_TADDR special string to z_sendmany
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Allow multiple nuparams options in config file
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depends: Switch to `cargo vendor` for Rust dependencies
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QA: Comment out Rust crate checks in updatecheck.py
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depends: Ensure that SOURCES_PATH exists before vendoring crates
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wallet: Ignore coinbase UTXOs with z_sendmany ANY_TADDR
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rpc: Fix comma spacing in example z_sendmany commands
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Squashed 'src/leveldb/' changes from 20ca81f08..a31c8aa40
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Squashed 'src/leveldb/' changes from a31c8aa40..196962ff0
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Squashed 'src/leveldb/' changes from 196962ff0..c521b3ac6
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Squashed 'src/leveldb/' changes from c521b3ac6..64052c76c
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Squashed 'src/leveldb/' changes from 64052c76c..524b7e36a
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Squashed 'src/leveldb/' changes from 524b7e36a..f545dfabf
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depends: Remove cargo-checksum.sh
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Replace libsodium's crypto_generichash_blake2b with blake2b_simd
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blake2b: Allow consuming partial BLAKE2b output
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tracing: Correctly override tracing::Span move constructors
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build: Remove Rust staticlib naming workaround
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depends: Update to latest config.guess & config.sub
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build: out-of-tree fixups
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leveldb: Assert that ssize_t is the same size as size_t on Windows
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LockedPool: Fix LockedPool::free(nullptr) to be a no-op
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LockedPool: Make Arena::free and LockedPool::free noexcept
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allocators: Apply Allocator named requirements to secure_allocator::deallocate
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depends: Update map of GCC canonical hosts to Rust targets
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QA: Switch to x86_64-pc-linux-gnu for hard-coded Linux HOST
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build: Switch to x86_64-pc-linux-gnu for codecov filtering
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gitian: Switch from x86_64-unknown-linux-gnu to x86_64-linux-gnu
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util: Remove OpenSSL multithreading infrastructure
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Remove remaining OpenSSL references
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QA: Remove OpenSSL from updatecheck.py
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build: Remove a stray -lcrypto
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Squashed 'src/secp256k1/' changes from 6ad5cdb42..8ab24e8da
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build: Use the endomorphism optimization for secp256k1
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depends: libevent 2.1.12
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depends: ccache 3.7.11
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depends: googletest 1.8.1
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depends: utfcpp 3.1.2
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depends: Use correct HOST for download-linux target
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QA: Fix backporting bugs in httpbasics.py
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depends: Boost 1.74.0
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depends: ccache 3.7.12
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cargo update
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depends: ZeroMQ 4.3.3
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FFI: Merge librustzcash_init_zksnark_params variants into one function
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depends: Postpone current and scheduled Rust releases until 2021
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MOVEONLY: Move logging code from util.{h,cpp} to new files
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depends: Add Clang 8.0.0
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depends: Use vendored Clang for native compilation
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depends: Use vendored Clang for macOS cross-compilation
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depends: Vendor LLD and use it for linking
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depends: Add libc++ as a dependency
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depends: Don't replace default CXXFLAGS in C++ dependencies
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depends: Add multilib paths for Linux cross-compile
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build: Statically link libc++
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build: Add missing LIBUNIVALUE to Makefile.bench.include LDADD
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depends: Fix "unused variables" warning when compiling zeromq for Windows
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depends: Rename Boost libraries to follow MinGW/GCC convention
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depends: Fix boost::iostreams usage on Windows with libc++
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build: Compile secp256k1 with C99
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build: Add -lpthread to univalue test LDFLAGS
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qa: Disable FORTIFY_SOURCE checks
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QA: Add native_clang and libcxx to updatecheck.py
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test: Fix various pyflakes warnings
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doc: Add Clang and libc++ migration to release notes
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build: Update AX_CXX_COMPILE_STDCXX macro
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build: Require and build with C++ 17
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depends: Build C++ dependencies with C++ 17
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Switch from std::random_shuffle to std::shuffle
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Squashed 'src/secp256k1/' changes from 8ab24e8da..c6b6b8f1b
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build: Update secp256k1 configure flags
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Improve reject reasons for unmet shielded requirements
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Add logging to CCoinsViewCache::HaveShieldedRequirements
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utils: Remove unnecessary GetTempPath()
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Add txid to "shielded requirements not met" messages
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test/lint: Check for working changes before checking scripted diffs
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tests: Update chained_joinsplits test for HaveShieldedRequirements API change
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scripted-diff: Remove BOOST_STATIC_ASSERT
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Jeffrey Czyz (2):
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Fix compilation errors in support/lockedpool.cpp
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Fix segfault in allocator_tests/arena_tests
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Jeremy Rubin (1):
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Fix subscript[0] potential bugs in key.cpp
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John Newbery (1):
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[docs] document scripted-diff
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Jonas Schnelli (2):
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NotifyBlockTip signal: switch from hash (uint256) to CBlockIndex*
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Move uiInterface.NotifyBlockTip signal above the core/wallet signal
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Kaz Wesley (3):
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LockedPool: test handling of invalid allocations
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LockedPool: fix explosion for illegal-sized alloc
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LockedPool: avoid quadratic-time allocation
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Kris Nuttycombe (14):
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Prevent creation of shielded transactions in initial block download.
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Revert the move of the `getBalanceZaddr` block for ease of review.
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Fix forward declaration.
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Remove redundant CheckBlock calls.
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Reduce diff complexity.
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Apply style suggestions from code review
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-ibdskiptxverification must imply -checkpoints
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Apply suggestions from code review
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Ensure conflicting flags are reported as an error.
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Reject incompatible flags in "Step 2"
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Rename IBDSkipTxVerification back to ShouldCheckTransaction
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Fix command-line help for -ibdskiptxverification
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Fix invocation of updatecheck.py in make-release.py
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Replace invalid characters in log message decoding.
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Larry Ruane (4):
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Flush witness data when consistent (part 2)
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performance: auto params = CChainParams::GetConsensus()
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allow getaddressutxos if -lightwalletd
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add z_gettreestate rpc
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Luke Dashjr (2):
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lockedpool: When possible, use madvise to avoid including sensitive information in core dumps
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Add MIT license to Makefiles
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Marco Falke (3):
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Limit scope of all global std::once_flag
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Add extra LevelDB source to Makefile
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test: Move linters to test/lint, add readme
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Martin Ankerl (2):
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Use best-fit strategy in Arena, now O(log(n)) instead O(n)
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fix nits: variable naming, typos
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Mustafa (2):
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Add a source file for unit test utils.
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Move GetTempPath() to testutil.
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Nate Wilcox (3):
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Link the README.md to the specific readthedocs.io page for building on Debian/Ubuntu.
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Convert a sed command to a static patch file.
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depends: fix a logging bug for multi-archive packages.
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Nick (1):
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[RPC] Add transaction size to JSON output
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Pavel Janík (2):
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Do not shadow variable, use deprecated MAP_ANON if MAP_ANONYMOUS is not defined.
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Do not include env_win.cc on non-Windows systems
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Pieter Wuille (2):
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Remove some unused functions and methods
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Fail on commit with VERIFY SCRIPT but no scripted-diff
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Sean Bowe (3):
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Update Rust to 1.44.1.
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cargo update
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Update to latest zcash_* and zkcrypto crates.
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Taylor Hornby (3):
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Fix buffer overflows in P2PKH tests
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Add a missing % to a string interpolation in rpc test framework
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Fix undefined behavior in the test_bitcoin tests
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Thomas Snider (1):
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[trivial] Switched constants to sizeof()
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Vasil Dimov (1):
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lockedpool: avoid sensitive data in core files (FreeBSD)
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Wladimir J. van der Laan (19):
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wallet: Change CCrypter to use vectors with secure allocator
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wallet: Get rid of LockObject and UnlockObject calls in key.h
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support: Add LockedPool
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rpc: Add `getmemoryinfo` call
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bench: Add benchmark for lockedpool allocation/deallocation
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http: Restrict maximum size of request line + headers
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Replace scriptnum_test's normative ScriptNum implementation
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build: remove libcrypto as internal dependency in libbitcoinconsensus.pc
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http: Do a pending c++11 simplification
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http: Add log message when work queue is full
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http: Change boost::scoped_ptr to std::unique_ptr in HTTPRequest
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http: use std::move to move HTTPRequest into HTTPWorkItem
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Add fs.cpp/h
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Replace includes of boost/filesystem.h with fs.h
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Replace uses of boost::filesystem with fs
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Use fsbridge for fopen and freopen
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torcontrol: Use fs::path instead of std::string for private key path
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Remove `namespace fs=fs`
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test: Mention commit id in scripted diff error
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fanquake (8):
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build: remove SSL lib detection
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build: remove OpenSSL detection and libs
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depends: remove OpenSSL package
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doc: remove OpenSSL from build instructions and licensing info
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depends: Disable unused ZeroMQ features
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depends: zeromq: disable draft classes and methods
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build: only pass --disable-dependency-tracking to packages that understand it
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build: pass --enable-option-checking to applicable packages
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mruddy (1):
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[depends, zmq, doc] avoid deprecated zeromq api functions
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practicalswift (7):
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Fix out-of-bounds write in case of failing mmap(...) in PosixLockedPageAllocator::AllocateLocked
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Improve readability by removing redundant casts to same type (on all platforms)
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tests: Remove OldSetKeyFromPassphrase/OldEncrypt/OldDecrypt
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Remove unused Boost includes
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Add "export LC_ALL=C" to all shell scripts
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Add error handling: exit if cd fails
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Use bash instead of POSIX sh. POSIX sh does not support arrays.
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Jack Grigg (9):
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Update license headers
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leveldb: Fix typo
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LockedPool: Switch to HTTPS URLs in licenses and comments
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test: Fix LFSR period in comments
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httpserver: Code style cleanups
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depends: Update packages documentation for Zcash
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depends: Add untested note to FreeBSD host
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Update example scripted-diff comit in doc/developer-notes.md
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Use HTTPS in script license headers
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syd (1):
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Add assert_raises_message to the python test framework.
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Ying Tong Lai (9):
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Add funding stream addresses to getblocksubsidy RPC output
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Fix CScript encoding
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Handle shielded address case
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Minor cleanups
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Only return address instead of CScript
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Remove void declaration of ScriptPubKeyToJSON()
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Postpone native_ccache 4.0
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make-release.py: Versioning changes for 4.1.0-rc1.
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make-release.py: Updated manpages for 4.1.0-rc1.
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ying tong (1):
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Apply suggestions from code review
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Benjamin Winston (1):
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Postponed dependency updates, refer to core team sync meeting.
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Homu