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Fix compiler error by deleting GetContext default ctor #5685

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When updating compiler version for MyRocks I'm seeing this error with rocksdb:

ome/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:91:3: error: explicitly defaulted default constructor is implicitly deleted
      [-Werror,-Wdefaulted-function-deleted]
  GetContext() = default;
  ^
/home/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:166:18: note: default constructor of 'GetContext' is implicitly deleted because field
      'tracing_get_id_' of const-qualified type 'const uint64_t' (aka 'const unsigned long') would not be initialized
  const uint64_t tracing_get_id_;
                 ^

The error itself is rather self explanatory and makes sense.

Given that no one seems to be using the default ctor (they shouldn't, anyway), I'm deleting it.

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@yizhang82 has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

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LGTM. Thanks for fixing.

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@yizhang82 merged this pull request in 04a849b.

yiwu-arbug pushed a commit to tikv/rocksdb that referenced this pull request Oct 30, 2019
* Revert "Relax warnings as errors so we can build on Clang 11 (#123)"

This reverts commit 710819d.

* Rename InternalDBStatsType enum names (facebook#5779)

Summary:
When building with clang 9, warning is reported for InternalDBStatsType type names shadowed the one for statistics. Rename them.
Pull Request resolved: facebook#5779

Test Plan: Build with clang 9 and see it passes.

Differential Revision: D17239378

fbshipit-source-id: af28fb42066c738cd1b841f9fe21ab4671dafd18

* Fix compiler error by deleting GetContext default ctor (facebook#5685)

Summary:
When updating compiler version for MyRocks I'm seeing this error with rocksdb:

```
ome/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:91:3: error: explicitly defaulted default constructor is implicitly deleted
      [-Werror,-Wdefaulted-function-deleted]
  GetContext() = default;
  ^
/home/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:166:18: note: default constructor of 'GetContext' is implicitly deleted because field
      'tracing_get_id_' of const-qualified type 'const uint64_t' (aka 'const unsigned long') would not be initialized
  const uint64_t tracing_get_id_;
                 ^
```

The error itself is rather self explanatory and makes sense.

Given that no one seems to be using the default ctor (they shouldn't, anyway), I'm deleting it.
Pull Request resolved: facebook#5685

Differential Revision: D16747712

Pulled By: yizhang82

fbshipit-source-id: 95c0acb958a1ed41154c0047d2e6fce7644de53f

* Fix a compile error (facebook#5864)

Summary:
```
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:653:48: error: implicit conversion loses integer precision: 'uint64_t' (aka 'unsigned long long') to 'std::__1::linear_congruential_engine<unsigned int, 48271, 0, 2147483647>::result_type' (aka 'unsigned int') [-Werror,-Wshorten-64-to-32]
  std::default_random_engine rand_engine(env_->NowMicros());
```
Pull Request resolved: facebook#5864

Differential Revision: D17668962

fbshipit-source-id: e08fa58b2a78a8dd8b334862b5714208f696b8ab
merryChris pushed a commit to merryChris/rocksdb that referenced this pull request Nov 18, 2019
Summary:
When updating compiler version for MyRocks I'm seeing this error with rocksdb:

```
ome/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:91:3: error: explicitly defaulted default constructor is implicitly deleted
      [-Werror,-Wdefaulted-function-deleted]
  GetContext() = default;
  ^
/home/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:166:18: note: default constructor of 'GetContext' is implicitly deleted because field
      'tracing_get_id_' of const-qualified type 'const uint64_t' (aka 'const unsigned long') would not be initialized
  const uint64_t tracing_get_id_;
                 ^
```

The error itself is rather self explanatory and makes sense.

Given that no one seems to be using the default ctor (they shouldn't, anyway), I'm deleting it.
Pull Request resolved: facebook#5685

Differential Revision: D16747712

Pulled By: yizhang82

fbshipit-source-id: 95c0acb958a1ed41154c0047d2e6fce7644de53f
Connor1996 pushed a commit to Connor1996/rocksdb that referenced this pull request Nov 21, 2019
* Revert "Relax warnings as errors so we can build on Clang 11 (tikv#123)"

This reverts commit 710819d.

* Rename InternalDBStatsType enum names (facebook#5779)

Summary:
When building with clang 9, warning is reported for InternalDBStatsType type names shadowed the one for statistics. Rename them.
Pull Request resolved: facebook#5779

Test Plan: Build with clang 9 and see it passes.

Differential Revision: D17239378

fbshipit-source-id: af28fb42066c738cd1b841f9fe21ab4671dafd18

* Fix compiler error by deleting GetContext default ctor (facebook#5685)

Summary:
When updating compiler version for MyRocks I'm seeing this error with rocksdb:

```
ome/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:91:3: error: explicitly defaulted default constructor is implicitly deleted
      [-Werror,-Wdefaulted-function-deleted]
  GetContext() = default;
  ^
/home/yzha/mysql/mysql-fork2/rocksdb/table/get_context.h:166:18: note: default constructor of 'GetContext' is implicitly deleted because field
      'tracing_get_id_' of const-qualified type 'const uint64_t' (aka 'const unsigned long') would not be initialized
  const uint64_t tracing_get_id_;
                 ^
```

The error itself is rather self explanatory and makes sense.

Given that no one seems to be using the default ctor (they shouldn't, anyway), I'm deleting it.
Pull Request resolved: facebook#5685

Differential Revision: D16747712

Pulled By: yizhang82

fbshipit-source-id: 95c0acb958a1ed41154c0047d2e6fce7644de53f

* Fix a compile error (facebook#5864)

Summary:
```
tools/block_cache_analyzer/block_cache_trace_analyzer.cc:653:48: error: implicit conversion loses integer precision: 'uint64_t' (aka 'unsigned long long') to 'std::__1::linear_congruential_engine<unsigned int, 48271, 0, 2147483647>::result_type' (aka 'unsigned int') [-Werror,-Wshorten-64-to-32]
  std::default_random_engine rand_engine(env_->NowMicros());
```
Pull Request resolved: facebook#5864

Differential Revision: D17668962

fbshipit-source-id: e08fa58b2a78a8dd8b334862b5714208f696b8ab
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3 participants