MT5 · Compiler warnings
MT5 67 · The result of applying the unary minus operator to an unsigned ulong type is undefined | YI GOLD
Official meaning
The result of applying the unary minus operator to an unsigned ulong type is undefined
Possible causes · YI GOLD suggestions
Determine the cause from the official meaning, the triggering function and terminal logs.
Troubleshooting · YI GOLD suggestions
Review the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds.