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https://issues.apache.org/jira/browse/AVRO-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17818732#comment-17818732
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ASF subversion and git services commented on AVRO-3942:
-------------------------------------------------------
Commit 2f5da64f24bd2259a66e0751bb29d9a130f736e0 in avro's branch
refs/heads/branch-1.11 from Mikhail Koviazin
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=2f5da64f2 ]
[AVRO-3942] Mark MemoryOutputStream as final (#2752)
Otherwise the class raises a compilation warning:
lang/c++/impl/Stream.cc:129:27: warning: class with destructor marked 'final'
cannot be inherited from [-Wfinal-dtor-non-final-class]
120 | class MemoryOutputStream : public OutputStream {
| final
121 | public:
122 | const size_t chunkSize_;
123 | std::vector<uint8_t *> data_;
124 | size_t available_;
125 | size_t byteCount_;
126 |
127 | explicit MemoryOutputStream(size_t chunkSize) :
chunkSize_(chunkSize),
128 | available_(0),
byteCount_(0) {}
129 | ~MemoryOutputStream() final {
| ^
lang/c++/impl/Stream.cc:120:7: note: mark 'avro::MemoryOutputStream' as 'final'
to silence this warning
120 | class MemoryOutputStream : public OutputStream {
| ^
(cherry picked from commit 258571ba84d2e0317b45ac95c1a974e0ee7e7725)
> MemoryOutputStream yields a compiler warning
> --------------------------------------------
>
> Key: AVRO-3942
> URL: https://issues.apache.org/jira/browse/AVRO-3942
> Project: Apache Avro
> Issue Type: Improvement
> Components: c++
> Reporter: Mikhail Koviazin
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Upon building with clang, MemoryOutputStream raises a compilation warning:
>
>
> {code:java}
> /home/parallels/workspace/avro/lang/c++/impl/Stream.cc:129:27: warning: class
> with destructor marked 'final' cannot be inherited from
> [-Wfinal-dtor-non-final-class]
> 120 | class MemoryOutputStream : public OutputStream {
> | final
> 121 | public:
> 122 | const size_t chunkSize_;
> 123 | std::vector<uint8_t *> data_;
> 124 | size_t available_;
> 125 | size_t byteCount_;
> 126 |
> 127 | explicit MemoryOutputStream(size_t chunkSize) :
> chunkSize_(chunkSize),
> 128 | available_(0),
> byteCount_(0) {}
> 129 | ~MemoryOutputStream() final {
> | ^
> /home/parallels/workspace/avro/lang/c++/impl/Stream.cc:120:7: note: mark
> 'avro::MemoryOutputStream' as 'final' to silence this warning
> 120 | class MemoryOutputStream : public OutputStream {
> | ^
>
> {code}
>
> It should be fixed by either marking the class as `final` or removing `final`
> keyword from destructor. I think the most logical one is the former. I can do
> this if there're no objections.
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