Bug #11792200 - DIVIDING LARGE NUMBERS CAUSES STACK CORRUPTIONS
This was a buffer overrun in do_div_mod(), overwriting the internal buffer of auto variable 'tmp' in Item_func_int_div::val_int. Result on windows: 'this' is set to zero, and crash. Ran fine on other platforms (no valgrind warnings), but this is undefined behaviour on any platform of course.
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