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MDEV-26504 THD::copy_db_to() fails to return true if THD::db is null

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THD::copy_db_to(): Always return true if the output parameter
was left uninitialized. This fixes a regression that was caused
by commit 7d0d934ca6 (MDEV-16473).

MariaDB Server 10.3 and later were unaffected by this bug
thanks to commit a7e352b54d.

Possibly this bug only affects mysql_list_fields()
in the Embedded Server (libmysqld).

This bug was found by GCC 11.2.0 in CMAKE_BUILD_TYPE=RelWithDebInfo.
This commit is contained in:
Marko Mäkelä
2021-08-30 14:26:27 +03:00
parent fda704c82c
commit ceb40ef45b
1 changed files with 1 additions and 3 deletions
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4
sql/sql_class.h
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@ -4003,10 +4003,8 @@ public:
for any CTE references.
*/
if (!lex->with_cte_resolution)
{
my_message(ER_NO_DB_ERROR, ER(ER_NO_DB_ERROR), MYF(0));
return TRUE;
}
return TRUE;
}
else
{