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util: use [[fallthrough]] directly#60

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fanquake merged 1 commit into
bitcoin-core:bitcoin-forkfrom
fanquake:fallthrough_default
May 28, 2026
Merged

util: use [[fallthrough]] directly#60
fanquake merged 1 commit into
bitcoin-core:bitcoin-forkfrom
fanquake:fallthrough_default

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Now that C++17 is required, there's no need to provide a fallback for unsupported compilers.

Now that C++17 is required, there's no need to provide a fallback for
unsupported compilers.

@hebasto hebasto left a comment

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ACK 42a5f29.

This change allows us to drop this code in Bitcoin Core:

    FALLTHROUGH_INTENDED=[[fallthrough]]

@fanquake fanquake merged commit a2f531d into bitcoin-core:bitcoin-fork May 28, 2026
@fanquake fanquake deleted the fallthrough_default branch May 28, 2026 08:35
fanquake added a commit to fanquake/bitcoin that referenced this pull request May 28, 2026
a7f9bdc611 Merge bitcoin-core/leveldb-subtree#52: Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"
a2f531d2d0 Merge bitcoin-core/leveldb-subtree#60: util: use [[fallthrough]] directly
1a166221cf Merge bitcoin-core/leveldb-subtree#61: Disable seek compaction
6bfdb6093b Disable seek compaction
42a5f29aa9 util: use [[fallthrough]] directly
c274b50867 Merge bitcoin-core/leveldb-subtree#53: refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
68740f586f Merge bitcoin-core/leveldb-subtree#59: Fix Clang `-Wconditional-uninitialized` warning
70142e186b Merge bitcoin-core/leveldb-subtree#55: build: Require C++17
d123cf5a83 Effectively, this change
31361bf339 Allow different C/C++ standards when this is used as a subproject.
0711e6d082 Fix Clang `-Wconditional-uninitialized` warning
85665f9547 refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
fd8f69657e Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"

git-subtree-dir: src/leveldb
git-subtree-split: a7f9bdc6114fe6eeb848fda2980fe61d86ff2045
fanquake added a commit to fanquake/bitcoin that referenced this pull request May 28, 2026
fanquake added a commit to bitcoin/bitcoin that referenced this pull request May 28, 2026
a9ac680 build: remove FALLTHROUGH_INTENDED from leveldb.cmake (fanquake)
4d58c32 build: remove -Wno-conditional-uninitialized from leveldb build (fanquake)
58cdb5c Squashed 'src/leveldb/' changes from ab6c84e6f3..a7f9bdc611 (fanquake)

Pull request description:

  Includes:
  * bitcoin-core/leveldb-subtree#52
  * bitcoin-core/leveldb-subtree#53
  * bitcoin-core/leveldb-subtree#55
  * bitcoin-core/leveldb-subtree#59
  * bitcoin-core/leveldb-subtree#60
  * bitcoin-core/leveldb-subtree#61

ACKs for top commit:
  hebasto:
    ACK a9ac680.
  sedited:
    ACK a9ac680
  andrewtoth:
    ACK a9ac680

Tree-SHA512: dc80a0e5eabd63866b395681935ba47bd3f67292049f2cce77f6bcf9cdd6f3bb9bcf2d87ae836a7af5b3f07fe21a1885697cbae3eb930900e396c2588910e12a
mraksoll4 added a commit to Bitwebissss/bitweb-ver1 that referenced this pull request Jun 3, 2026
8e89537cef Merge bitcoin-core/leveldb-subtree#62: ci: Add LevelDB test workflow
47abe23ff2 ci: run LevelDB tests in GitHub Actions
a7f9bdc611 Merge bitcoin-core/leveldb-subtree#52: Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"
a2f531d2d0 Merge bitcoin-core/leveldb-subtree#60: util: use [[fallthrough]] directly
1a166221cf Merge bitcoin-core/leveldb-subtree#61: Disable seek compaction
6bfdb6093b Disable seek compaction
42a5f29aa9 util: use [[fallthrough]] directly
c274b50867 Merge bitcoin-core/leveldb-subtree#53: refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
68740f586f Merge bitcoin-core/leveldb-subtree#59: Fix Clang `-Wconditional-uninitialized` warning
70142e186b Merge bitcoin-core/leveldb-subtree#55: build: Require C++17
d123cf5a83 Effectively, this change
31361bf339 Allow different C/C++ standards when this is used as a subproject.
0711e6d082 Fix Clang `-Wconditional-uninitialized` warning
ab6c84e6f3 Merge bitcoin-core/leveldb-subtree#58: Initialize file_size to 0 to avoid UB
ad9b1c9893 Initialize file_size to 0 to avoid UB
cad64b151d Merge bitcoin-core/leveldb-subtree#57: doc: fix typos
157ed16be9 doc: fix typos
85665f9547 refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
fd8f69657e Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"

git-subtree-dir: src/leveldb
git-subtree-split: 8e89537cef1144b6b75df83ac53239b79d6e2617
mraksoll4 added a commit to bitweb-project/bitweb that referenced this pull request Jun 4, 2026
8e89537cef Merge bitcoin-core/leveldb-subtree#62: ci: Add LevelDB test workflow
47abe23ff2 ci: run LevelDB tests in GitHub Actions
a7f9bdc611 Merge bitcoin-core/leveldb-subtree#52: Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"
a2f531d2d0 Merge bitcoin-core/leveldb-subtree#60: util: use [[fallthrough]] directly
1a166221cf Merge bitcoin-core/leveldb-subtree#61: Disable seek compaction
6bfdb6093b Disable seek compaction
42a5f29aa9 util: use [[fallthrough]] directly
c274b50867 Merge bitcoin-core/leveldb-subtree#53: refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
68740f586f Merge bitcoin-core/leveldb-subtree#59: Fix Clang `-Wconditional-uninitialized` warning
70142e186b Merge bitcoin-core/leveldb-subtree#55: build: Require C++17
d123cf5a83 Effectively, this change
31361bf339 Allow different C/C++ standards when this is used as a subproject.
0711e6d082 Fix Clang `-Wconditional-uninitialized` warning
ab6c84e6f3 Merge bitcoin-core/leveldb-subtree#58: Initialize file_size to 0 to avoid UB
ad9b1c9893 Initialize file_size to 0 to avoid UB
cad64b151d Merge bitcoin-core/leveldb-subtree#57: doc: fix typos
157ed16be9 doc: fix typos
85665f9547 refactor: Delete unused `ScopedHandle:operator=(ScopedHandle&&)`
fd8f69657e Revert "Increase maximum read-only mmap()s used from 1000 to 4096 on 64-bit systems"

git-subtree-dir: src/leveldb
git-subtree-split: 8e89537cef1144b6b75df83ac53239b79d6e2617
rustaceanrob pushed a commit to 2140-dev/bitcoin that referenced this pull request Jun 5, 2026
Kino1994 pushed a commit to Kino1994/bitcoin-full-history that referenced this pull request Jun 28, 2026
Kino1994 pushed a commit to Kino1994/bitcoin-full-history that referenced this pull request Jun 28, 2026
0a6aeed build: remove FALLTHROUGH_INTENDED from leveldb.cmake (fanquake)
9b7550e build: remove -Wno-conditional-uninitialized from leveldb build (fanquake)
58cdb5c Squashed 'src/leveldb/' changes from ab6c84e6f3..a7f9bdc611 (fanquake)

Pull request description:

  Includes:
  * bitcoin-core/leveldb-subtree#52
  * bitcoin-core/leveldb-subtree#53
  * bitcoin-core/leveldb-subtree#55
  * bitcoin-core/leveldb-subtree#59
  * bitcoin-core/leveldb-subtree#60
  * bitcoin-core/leveldb-subtree#61

ACKs for top commit:
  hebasto:
    ACK 0a6aeed.
  sedited:
    ACK 0a6aeed
  andrewtoth:
    ACK 0a6aeed

Tree-SHA512: dc80a0e5eabd63866b395681935ba47bd3f67292049f2cce77f6bcf9cdd6f3bb9bcf2d87ae836a7af5b3f07fe21a1885697cbae3eb930900e396c2588910e12a
BigcoinBGC pushed a commit to BigcoinBGC/bigcoin that referenced this pull request Jun 30, 2026
BigcoinBGC pushed a commit to BigcoinBGC/bigcoin that referenced this pull request Jun 30, 2026
b27d612 build: remove FALLTHROUGH_INTENDED from leveldb.cmake (fanquake)
f2b0e14 build: remove -Wno-conditional-uninitialized from leveldb build (fanquake)
58cdb5c Squashed 'src/leveldb/' changes from ab6c84e6f3..a7f9bdc611 (fanquake)

Pull request description:

  Includes:
  * bitcoin-core/leveldb-subtree#52
  * bitcoin-core/leveldb-subtree#53
  * bitcoin-core/leveldb-subtree#55
  * bitcoin-core/leveldb-subtree#59
  * bitcoin-core/leveldb-subtree#60
  * bitcoin-core/leveldb-subtree#61

ACKs for top commit:
  hebasto:
    ACK b27d612.
  sedited:
    ACK b27d612
  andrewtoth:
    ACK b27d612

Tree-SHA512: dc80a0e5eabd63866b395681935ba47bd3f67292049f2cce77f6bcf9cdd6f3bb9bcf2d87ae836a7af5b3f07fe21a1885697cbae3eb930900e396c2588910e12a
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2 participants