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C Run-Time Error R6018

unexpected heap error

The program encountered an unexpected error while performing a memory-management operation.

This error usually occurs if the program inadvertently alters the run-time heap data. However, it can also be caused by an internal error in the run-time or operating-system code.

If your compiler provides a library containing _heapchk and _heapwalk, you can use these functions to diagnose this error.

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