Thayumanavar aea3d4b851 BUG#16402143 - STACK CORRUPTION IN DBUG_EXPLAIN ...

DESCRIPTION AND FIX:
DBUG_EXPLAIN result in buffer overflow when the
DEBUG variable values length exceed 255.
In _db_explain_ function which call macro str_to_buf
incorrectly passes the length of buf avaliable to
strnmov as len+1. The fix calculates the avaliable
space in buf and passes it to strnxmov.

2013-04-10 11:50:41 +05:30

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