Ramil Kalimullin 1614c3c128 Fix for bug #54575: crash when joining tables with unique set column ...

Problem: a flaw (derefencing a NULL pointer) in the LIKE optimization
code may lead to a server crash in some rare cases.

Fix: check the pointer before its dereferencing.


mysql-test/r/func_like.result:
  Fix for bug #54575: crash when joining tables with unique set column
    - test result.
mysql-test/t/func_like.test:
  Fix for bug #54575: crash when joining tables with unique set column
    - test case.
sql/item_cmpfunc.cc:
  Fix for bug #54575: crash when joining tables with unique set column
    - check res2 buffer pointer before its dereferencing 
  as it may be NULL in some cases.

2010-06-20 02:02:58 +04:00

3.6 KiB

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