Michael Poole created ORC-579:
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Summary: 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: 1.6.2, 1.5.8
Environment: Ubuntu 19.10
Reporter: Michael Poole
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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