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Bug#19553099 EXPIRE_LOGS_DAYS=1 CRASH MYSQLD DURING RESTART, DBUG_SYNC(NULL, ...)

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- Restarting mysqld with --expire-log-days=1 triggers 'log_in_use()' to be called while current_thd is NULL.
 - Check current_thd before calling DEBUG_SYNC() to avoid passing NULL pointer to DEBUG_SYNC()
 - Wrap debug code construct inside #ifndef DBUG_OFF like in other parts of the file
This commit is contained in:
magnus.blaudd@oracle.com 2014-10-02 15:58:02 +02:00
parent d6d45fa3d8
commit 361ad4bd0b
1 changed files with 4 additions and 1 deletions
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5
sql/sql_repl.cc
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@ -248,7 +248,10 @@ bool log_in_use(const char* log_name)
size_t log_name_len = strlen(log_name) + 1;
THD *tmp;
bool result = 0;
DEBUG_SYNC(current_thd,"purge_logs_after_lock_index_before_thread_count");
#ifndef BDUG_OFF
if (current_thd)
DEBUG_SYNC(current_thd,"purge_logs_after_lock_index_before_thread_count");
#endif
mysql_mutex_lock(&LOCK_thread_count);
I_List_iterator<THD> it(threads);