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MDEV-11675 fixup: GCC -Og -Wmaybe-uninitialized

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save_restore_context_apply_event(): Because compilers cannot infer
that ev->apply_event(rgi) will not affect ev->get_type_code(),
let us test that condition only once and allow the compiler to
emit a tail call.

Also, replace a goto with an early return for error handling.
This commit is contained in:
Marko Mäkelä 2022-02-02 11:30:16 +02:00
parent 2b95c36b4b
commit 12f29a4bc0
1 changed files with 26 additions and 37 deletions
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63
sql/sql_binlog.cc
View file

@ -1,5 +1,6 @@
/*
Copyright (c) 2005, 2013, Oracle and/or its affiliates.
Copyright (c) 2022, MariaDB Corporation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -183,51 +184,39 @@ int binlog_defragment(THD *thd)
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
int save_restore_context_apply_event(Log_event *ev, rpl_group_info *rgi)
{
int err= 0;
if (ev->get_type_code() != QUERY_EVENT)
return ev->apply_event(rgi);
THD *thd= rgi->thd;
Relay_log_info *rli= thd->rli_fake;
sql_digest_state *m_digest;
PSI_statement_locker *m_statement_psi;
LEX_CSTRING save_db;
my_thread_id m_thread_id= 0;
DBUG_ASSERT(!rli->mi);
LEX_CSTRING connection_name= { STRING_WITH_LEN("BINLOG_BASE64_EVENT") };
DBUG_ASSERT(!rli->mi);
if (ev->get_type_code() == QUERY_EVENT)
if (!(rli->mi= new Master_info(&connection_name, false)))
{
m_digest= thd->m_digest;
m_statement_psi= thd->m_statement_psi;
m_thread_id= thd->variables.pseudo_thread_id;
thd->system_thread_info.rpl_sql_info= NULL;
if ((rli->mi= new Master_info(&connection_name, false)))
{
save_db= thd->db;
thd->reset_db(&null_clex_str);
}
else
{
my_error(ER_OUT_OF_RESOURCES, MYF(0));
err= -1;
goto end;
}
thd->m_digest= NULL;
thd->m_statement_psi= NULL;
my_error(ER_OUT_OF_RESOURCES, MYF(0));
return -1;
}
err= ev->apply_event(rgi);
sql_digest_state *m_digest= thd->m_digest;
PSI_statement_locker *m_statement_psi= thd->m_statement_psi;;
LEX_CSTRING save_db= thd->db;
my_thread_id m_thread_id= thd->variables.pseudo_thread_id;
end:
if (ev->get_type_code() == QUERY_EVENT)
{
thd->m_digest= m_digest;
thd->m_statement_psi= m_statement_psi;
thd->variables.pseudo_thread_id= m_thread_id;
thd->reset_db(&save_db);
delete rli->mi;
rli->mi= NULL;
}
thd->system_thread_info.rpl_sql_info= NULL;
thd->reset_db(&null_clex_str);
thd->m_digest= NULL;
thd->m_statement_psi= NULL;
int err= ev->apply_event(rgi);
thd->m_digest= m_digest;
thd->m_statement_psi= m_statement_psi;
thd->variables.pseudo_thread_id= m_thread_id;
thd->reset_db(&save_db);
delete rli->mi;
rli->mi= NULL;
return err;
}