Никаких значимых изменений, только обход "странностей" в MSVC.
Как оказалось MSVC распространяет действие директивы
`pragma(warning(supppress:#))` строго на следующую строку, даже если эта
строка является продолжением комментария начатого в самой директиве
и/или не содержит синтаксических конструкций языка.
Поэтому большинство из добавленных ранее директив для подавления ложных
предупреждений, перестало работать после переформатирования исходного
кода.
The stable bugfix release in memory of [Sergey Kapitsa](https://en.wikipedia.org/wiki/Sergey_Kapitsa) on his 95th birthday.
Fixes:
------
- backport: Fixed insignificant typo of `||` inside `#if` byte-order condition.
- backport: Fixed `SIGSEGV` or an erroneous call to `free()` in situations where
errors occur when reopening by `mdbx_env_open()` of a previously used
environment.
- backport: Fixed `cursor_put_nochecklen()` internals for case when dupsort'ed named subDb
contains a single key with multiple values (aka duplicates), which are replaced
with a single value by put-operation with the `MDBX_UPSERT+MDBX_ALLDUPS` flags.
In this case, the database becomes completely empty, without any pages.
However exactly this condition was not considered and thus wasn't handled correctly.
See [issue#8](https://gitflic.ru/project/erthink/libmdbx/issue/8) for more information.
- backport: Fixed extra assertion inside `override_meta()`, which could
lead to false-positive failing of the assertion in a debug builds during
DB recovery and auto-rollback.
- backport: Refined the `__cold`/`__hot` macros to avoid the
`error: inlining failed in call to ‘always_inline FOO(...)’: target specific option mismatch`
issue during build using GCC >10.x for SH4 arch.
Minors:
-------
- backport: Using the https://libmdbx.dqdkfa.ru/dead-github
for resources deleted by the Github' administration.
- backport: Fixed English typos.
- backport: Fixed proto of `__asan_default_options()`.
- backport: Fixed doxygen-description of C++ API, especially of C++20 concepts.
- backport: Refined `const` and `noexcept` for few C++ API methods.
- backport: Fixed copy&paste typo of "Getting started".
- backport: Update MithrilDB status.
- backport: Resolve false-posirive `used uninitialized` warning from GCC >10.x
while build for SH4 arch.
22 files changed, 250 insertions(+), 174 deletions(-)
Signed-off-by: Леонид Юрьев (Leonid Yuriev) <leo@yuriev.ru>
В том числе для устранения проблемы
`error: inlining failed in call to ‘always_inline FOO(...)’: target specific option mismatch`
при сборке посредством GCC >10.x для SH4.
Fixed cursor_put_nochecklen() internals for case when dupsort'ed named subDb
contains a single key with multiple values (aka duplicates), which are replaced
with a single value by put-operation with the `MDBX_UPSERT+MDBX_ALLDUPS` flags.
In this case, the database becomes completely empty, without any pages.
However exactly this condition was not considered and
thus wasn't handled correctly.
Fixes https://gitflic.ru/project/erthink/libmdbx/issue/8
Thanks Masatoshi Fukunaga <https://gitflic.ru/user/mah0x211> for reporting.
The removed assertion could be triggered in debug builds when a reading
and writing transactions are overlapped simultaneously with a change of DB
size.
There were no other negative consequences.
В том числе для устранения проблемы
`error: inlining failed in call to ‘always_inline FOO(...)’: target specific option mismatch`
при сборке посредством GCC >10.x для SH4.
Fixed cursor_put_nochecklen() internals for case when dupsort'ed named subDb
contains a single key with multiple values (aka duplicates), which are replaced
with a single value by put-operation with the `MDBX_UPSERT+MDBX_ALLDUPS` flags.
In this case, the database becomes completely empty, without any pages.
However exactly this condition was not considered and
thus wasn't handled correctly.
Fixes https://gitflic.ru/project/erthink/libmdbx/issue/8
Thanks Masatoshi Fukunaga <https://gitflic.ru/user/mah0x211> for reporting.
Устранение регресса после a484a1f89bcbf38aeb7a81d6080605f86ddc7933.
Проверка `prev_limit_pgno >= used_pgno` правомочна только в части сценариев,
но не в общем случае.
В том числе, для устранения срабатывания assert-проверки
`size_bytes == env->me_dxb_mmap.current` в специфических многопоточных
сценариях использования.
Проверка срабатывала только в отладочных сборках, при специфическом
наложении во времени читающей и пишущей транзакции в разных потоках,
одновременно с изменением размера БД.
Кроме срабатывание проверки, каких-либо других последствий не возникало.
Цель в предотвращении ошибки ERROR_NOT_ENOUGH_MEMORY в Windows, которая
совсем не информативна для пользователя и возникает в этом случае (когда
файл открыт read-only и короче запрошенного размера).
