ver5.1.12にて。うふふ。 Breakpoint 1, Item_func_mir_add::val_int (this=0x90143a8) at item_func.cc:5079 (gdb) bt #0 Item_func_mir_add::val_int (this=0x90143a8) at item_func.cc:5079 #1 0x0818e6ba in Item::send (this=0x90143a8, protocol=0x8fc…