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mariadb/sql
Ramil Kalimullin 99318017d5 Fix for bug #42803: Field_bit does not have unsigned_flag field,
can lead to bad memory access

Problem: Field_bit is the only field which returns INT_RESULT
and doesn't have unsigned flag. As it's not a descendant of the 
Field_num, so using ((Field_num *) field_bit)->unsigned_flag may lead
to unpredictable results.

Fix: check the field type before casting.
2009-10-08 16:56:31 +05:00
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