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Relax warnings as errors so we can build on Clang 11#123

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yiwu-arbug merged 1 commit intotikv:tikv-3.0from
nrc:werror
Sep 26, 2019
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Relax warnings as errors so we can build on Clang 11#123
yiwu-arbug merged 1 commit intotikv:tikv-3.0from
nrc:werror

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@nrc nrc commented Sep 25, 2019

This prevents TiKV building on MacOS.

PTAL @yiwu-arbug @Little-Wallace

@nrc nrc mentioned this pull request Sep 25, 2019
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Connor1996 commented Sep 25, 2019

Busy working on other things, sorry for not fixing it in time. Thanks!

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LGTM

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yiwu-arbug commented Sep 25, 2019

@nrc Adding these flags to corresponding rust-rocksdb build.rs scripts would avoid the need to modify rocksdb. Do you mind sending a PR there instead?

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nrc commented Sep 25, 2019

@yiwu-arbug I don't know how to do that - I tried adding cfg.cxxflag("-Wno-error=shadow"); to build_rocksdb, but I still got the new errors when building.

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aknuds1 commented Sep 25, 2019

Thanks, presuming this fixes TiKV build on OS X.

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yiwu-arbug commented Sep 25, 2019

@nrc have you try adding cxxflag("-Wno-error=shadow") to both librocksdb/build.rs and librocksdb/libtitan/build.rs?

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yiwu-arbug commented Sep 25, 2019

@nrc I'm not able to test since I cannot reproduce the error on my mac (also with clang 11). Don't know why :(

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nrc commented Sep 25, 2019

have you try adding cxxflag("-Wno-error=shadow") to both librocksdb/build.rs and librocksdb/libtitan/build.rs?

I have, and it still fails - from the logs, the flags are being passed to cmake properly, but I think the flags from CMakeLists.txt override them? I'm not sure about either Clang's or CMake's behaviour tbh.

Thinking about it I think it might be better to fix it here (and in Titan) rather than rust-rocksdb, since this will be a problem for people building these projects outside of rust-rocksdb too.

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nrc commented Sep 25, 2019

Seems like the unknown error is causing problems with older Clang on CI

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Hoverbear commented Sep 25, 2019

Seems related to tikv/rust-rocksdb#295

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yiwu-arbug commented Sep 26, 2019

have you try adding cxxflag("-Wno-error=shadow") to both librocksdb/build.rs and librocksdb/libtitan/build.rs?

I have, and it still fails - from the logs, the flags are being passed to cmake properly, but I think the flags from CMakeLists.txt override them? I'm not sure about either Clang's or CMake's behaviour tbh.

Thinking about it I think it might be better to fix it here (and in Titan) rather than rust-rocksdb, since this will be a problem for people building these projects outside of rust-rocksdb too.

just tried and seems it's because rocksdb's CMakeList.txt sets -Wshadow, which comes later in the compile command and override what's set from build.rs. I'm okay to land this. Do you mind fix the build? Seems CI is not happy with -Wno-error=defaulted-function-deleted.

@nrc
Relax warnings as errors so we can build on Clang 11
9507d3b 
Signed-off-by: Nick Cameron <nrc@ncameron.org>
@Hoverbear Hoverbear mentioned this pull request Sep 26, 2019
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@yiwu-arbug yiwu-arbug merged commit 9c5b744 into tikv:tikv-3.0 Sep 26, 2019
yiwu-arbug pushed a commit to tikv/titan that referenced this pull request Sep 26, 2019
@nrc
Relax warnings as errors so we can build on Clang 11 (#90)
974e5c6 
This prevents TiKV building on MacOS. See also tikv/rocksdb#123

Signed-off-by: Nick Cameron <nrc@ncameron.org>
yiwu-arbug pushed a commit that referenced this pull request Sep 26, 2019
@nrc
Relax warnings as errors so we can build on Clang 11 (#123)
710819d 
Signed-off-by: Nick Cameron <nrc@ncameron.org>
yiwu-arbug pushed a commit that referenced this pull request Oct 30, 2019
Cherry-pick compile error fixes (#129)
d9ac746 
* 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
@sre-bot sre-bot mentioned this pull request Nov 21, 2019
Closed
Connor1996 pushed a commit to Connor1996/rocksdb that referenced this pull request Nov 21, 2019
@Connor1996
Cherry-pick compile error fixes (tikv#129)
d773fad 
* 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
@tabokie tabokie mentioned this pull request May 9, 2022
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@yiwu-arbug yiwu-arbug yiwu-arbug approved these changes

@Connor1996 Connor1996 Connor1996 approved these changes

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@nrc @Connor1996 @yiwu-arbug @aknuds1 @Hoverbear