as `cf_name` is not derived from any class, it's viable
to mark it `final`.
this change is created to to silence the warning from Clang,
like:
```
/home/kefu/.local/bin/clang++ -DDEBUG -DDEBUG_LSA_SANITIZER -DFMT_LOCALE -DFMT_SHARED -DHAVE_LZ4_COMPRESS_DEFAULT -DSANITIZE -DSCYLLA_BUILD_MODE=debug -DSCYLLA_ENABLE_ERROR_INJECTION -DSEASTAR_API_LEVEL=6 -DSEASTAR_DEBUG -DSEASTAR_DEBUG_SHARED_PTR -DSEASTAR_DEFAULT_ALLOCATOR -DSEASTAR_SCHEDULING_GROUPS_COUNT=16 -DSEASTAR_SHUFFLE_TASK_QUEUE -DSEASTAR_TYPE_ERASE_MORE -DXXH_PRIVATE_API -I/home/kefu/dev/scylladb -I/home/kefu/dev/scylladb/build/cmake/gen -I/home/kefu/dev/scylladb/build/cmake -I/home/kefu/dev/scylladb/seastar/include -I/home/kefu/dev/scylladb/build/cmake/seastar/gen/include -Wall -Werror -Wno-mismatched-tags -Wno-missing-braces -Wno-c++11-narrowing -O0 -g -gz -std=gnu++20 -U_FORTIFY_SOURCE -DSEASTAR_SSTRING -Wno-error=unused-result "-Wno-error=#warnings" -fstack-clash-protection -fsanitize=address -fsanitize=undefined -fno-sanitize=vptr -MD -MT CMakeFiles/scylla.dir/data_dictionary/data_dictionary.cc.o -MF CMakeFiles/scylla.dir/data_dictionary/data_dictionary.cc.o.d -o CMakeFiles/scylla.dir/data_dictionary/data_dictionary.cc.o -c /home/kefu/dev/scylladb/data_dictionary/data_dictionary.cc
In file included from /home/kefu/dev/scylladb/data_dictionary/data_dictionary.cc:9:
In file included from /home/kefu/dev/scylladb/data_dictionary/data_dictionary.hh:11:
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:287:2: error: destructor called on non-final 'cql3::cf_name' that has virtual functions but non-virtual destructor [-Werror,-Wdelete-non-abstract-non-virtual-dtor]
_M_payload._M_value.~_Stored_type();
^
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:318:4: note: in instantiation of member function 'std::_Optional_payload_base<cql3::cf_name>::_M_destroy' requested here
_M_destroy();
^
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:439:57: note: in instantiation of member function 'std::_Optional_payload_base<cql3::cf_name>::_M_reset' requested here
_GLIBCXX20_CONSTEXPR ~_Optional_payload() { this->_M_reset(); }
^
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:514:17: note: in instantiation of member function 'std::_Optional_payload<cql3::cf_name>::~_Optional_payload' requested here
constexpr _Optional_base() = default;
^
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:739:17: note: in defaulted default constructor for 'std::_Optional_base<cql3::cf_name>' first required here
constexpr optional(nullopt_t) noexcept { }
^
/home/kefu/dev/scylladb/cql3/statements/raw/batch_statement.hh:37:28: note: in instantiation of member function 'std::optional<cql3::cf_name>::optional' requested here
: cf_statement(std::nullopt)
^
/home/kefu/.local/bin/../lib/gcc/x86_64-pc-linux-gnu/13.0.1/../../../../include/c++/13.0.1/optional:287:23: note: qualify call to silence this warning
_M_payload._M_value.~_Stored_type();
^
```
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closes#13039
After fcb8d040 ("treewide: use Software Package Data Exchange
(SPDX) license identifiers"), many dual-licensed files were
left with empty comments on top. Remove them to avoid visual
noise.
Closes#10562
Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.
Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.
The changes we applied mechanically with a script, except to
licenses/README.md.
Closes#9937
There's no benefit to using C include guards so switch to pragma once
everywhere for consistency.
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
