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Executing cheksum control in my application fails when the debugger is connected

01-Apr-2021

Using software breakpoints impacts the checksum result.

The debugger inserts a dedicated “software breakpoint” instruction on addresses where software breakpoints are set. These “software breakpoint” instructions are not visible, e.g. in the Disassembly or Memory Window at software breakpoints addresses. When a software breakpoint is removed, original instruction is restored in its place.


Possible solution:

When performing any kind of checksum in your application, remove all software breakpoints.  

Default hardware breakpoints do not impact the checksum result.

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