Fix method redefinition warnings in threads on Perl >= 5.16 #21
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$drh gets cleared on CLONE, but the driver methods persist.
Due to a bug, this didn't warn until Perl 5.16
$ perl -Mthreads -MDBI -MDBD::mysql -we 'DBI->setup_driver("DBD::mysql");' \
-e 'DBD::mysql->driver; threads->create(sub { DBD::mysql->driver })->join'
Subroutine DBI::db::mysql_fd redefined at ${archlib}/DBI.pm line 1393.
Subroutine DBI::db::mysql_async_result redefined at ${archlib}/DBI.pm line 1393.
Subroutine DBI::db::mysql_async_ready redefined at ${archlib}/DBI.pm line 1393.
Subroutine DBI::st::mysql_async_result redefined at ${archlib}/DBI.pm line 1393.
Subroutine DBI::st::mysql_async_ready redefined at ${archlib}/DBI.pm line 1393.
CaptTofu
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Oct 16, 2013
Fix method redefinition warnings in threads on Perl >= 5.16
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$drh gets cleared on CLONE, but the driver methods persist.
Due to a bug, this didn't warn until Perl 5.16