[jira] [Created] (IMPALA-10699) Apply patch to libev to support compiling with C++17

["Joe McDonnell (Jira)" <ji...@apache.org>]

Joe McDonnell created IMPALA-10699:
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             Summary: Apply patch to libev to support compiling with C++17
                 Key: IMPALA-10699
                 URL: https://issues.apache.org/jira/browse/IMPALA-10699
             Project: IMPALA
          Issue Type: Bug
          Components: Infrastructure
    Affects Versions: Impala 4.0
            Reporter: Joe McDonnell


When trying to compile with -std=c++17, multiple files fail to compile due to c++17 incompatible code in libev:
{noformat}
In file included from /home/joe/view2/Impala/be/src/kudu/rpc/connection.h:30:0,
                 from /home/joe/view2/Impala/be/src/kudu/rpc/messenger.h:32,
                 from /home/joe/view2/Impala/be/src/rpc/rpc-mgr.h:22,
                 from /home/joe/view2/Impala/be/src/service/data-stream-service.cc:27:
/opt/Impala-Toolchain/toolchain-packages-gcc7.5.0/libev-4.20/include/ev++.h:355:46: error: ISO C++1z does not allow dynamic exception specifications
     dynamic_loop (unsigned int flags = AUTO) throw (bad_loop)
                                              ^~~~~
{noformat}
Kudu already applies a patch to libev's ev++.h to fix this, so we should apply the same patch to libev in native-toolchain. 

[https://github.com/apache/kudu/blob/master/thirdparty/patches/libev-c17.patch]



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