[jira] [Closed] (ORC-579) Compilation fails with g++ 9

["Dongjoon Hyun (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ORC-579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dongjoon Hyun closed ORC-579.
-----------------------------
    Resolution: Duplicate

> Compilation fails with g++ 9
> ----------------------------
>
>                 Key: ORC-579
>                 URL: https://issues.apache.org/jira/browse/ORC-579
>             Project: ORC
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.5.8, 1.6.2
>         Environment: Ubuntu 19.10
>            Reporter: Michael Poole
>            Priority: Minor
>
> g++ 9.2.1 with glibc 2.30 generates several warnings like these, which are promoted to compilation errors:
>  
> {code:java}
> In file included from /usr/include/string.h:494,
>                  from c++/libs/thirdparty/protobuf_ep-install/include/google/protobuf/stubs/port.h:38,
>                  from c++/libs/thirdparty/protobuf_ep-install/include/google/protobuf/stubs/common.h:45,
>                  from c++/src/orc_proto.pb.h:9,
>                  from c++/src/orc_proto.pb.cc:4,
>                  from ../c++/src/wrap/orc-proto-wrapper.cc:44:
> In function ‘void* memset(void*, int, size_t)’,
>     inlined from ‘void orc::proto::FileTail::SharedCtor()’ at c++/src/orc_proto.pb.cc:13453:11,
>     inlined from ‘orc::proto::FileTail::FileTail()’ at c++/src/orc_proto.pb.cc:13426:13,
>     inlined from ‘void protobuf_orc_5fproto_2eproto::InitDefaultsFileTailImpl()’ at c++/src/orc_proto.pb.cc:13421:1:
> /usr/include/x86_64-linux-gnu/bits/string_fortified.h:71:33: error: ‘void* __builtin_memset(void*, int, long unsigned int)’ offset [33, 56] from the object at ‘orc::proto::_FileTail_default_instance_’ is out of the bounds of referenced subobject ‘orc::proto::FileTail::postscript_’ with type ‘orc::proto::PostScript*’ at offset 24 [-Werror=array-bounds]
>    71 |   return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
>       |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> {code}
> This can be resolved by adding a line to the obvious place in c++/src/wrap/orc-proto-wrapper.cc:
>  
> {code:java}
>   DIAGNOSTIC_IGNORE("-Warray-bounds")
> {code}
>  
>  



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