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MDEV-26637: (plugin) ASAN: main.metadata and user_variables.basic MTR failures after MDEV-26572

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Get rid of locking "empty" plugin.
This problem present in our tests in case of malformed frm-file, for example.
This commit is contained in:
Oleksandr Byelkin 2021-09-30 10:14:56 +02:00
parent 763bdee81b
commit af8b2c6cec
1 changed files with 2 additions and 0 deletions
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2
sql/sql_plugin.cc
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@ -1068,6 +1068,8 @@ plugin_ref plugin_lock_by_name(THD *thd, const LEX_CSTRING *name, int type)
plugin_ref rc= NULL;
st_plugin_int *plugin;
DBUG_ENTER("plugin_lock_by_name");
if (!name->length)
DBUG_RETURN(NULL);
mysql_mutex_lock(&LOCK_plugin);
if ((plugin= plugin_find_internal(name, type)))
rc= intern_plugin_lock(lex, plugin_int_to_ref(plugin));