MySQL Bugs: #4487: Stored procedure connection aborted if uninitialized char

Bug #4487	Stored procedure connection aborted if uninitialized char
Submitted:	9 Jul 2004 15:51	Modified:	9 Sep 2004 17:13
Reporter:	Peter Gulutzan	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server	Severity:	S3 (Non-critical)
Version:	5.0.1-alpha-debug	OS:	Linux (SuSE 8.2)
Assigned to:	Per-Erik Martin	CPU Architecture:	Any

Description:
If I return a variable from a function, there is a connection failure. 
 
This happens only if the variable is CHAR (returning INT is okay). 
 
This happens only if the variable has never been the subject of an assignment (returning 
after "SET variable = value" is okay). 
 

How to repeat:
mysql> delimiter // 
mysql> create function f () returns char 
    -> begin 
    ->   declare v char; 
    ->   return v; 
    -> end;// 
Query OK, 0 rows affected, 1 warning (0.00 sec) 
 
mysql> select f();// 
ERROR 2013 (HY000): Lost connection to MySQL server during query

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