unreachable and dead code
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why i am getting unreachable and dead code warning , i am not able to understant.
if anyone knows, please help me.
2 个评论
Image Analyst
2026-2-24，19:42
I can't even read that thing. What is that diagram? Is it Stateflow or Simulink (which I don't have)? How did you run your check on it? You might have some condition that is always false, like
value = false
if value
% Do something if value = true
% This block will never get executed since value is not a variable,
% it's a constant.
end
VINAY
2026-2-25，4:27
Now you can check
回答（1 个）
Fangjun Jiang
2026-2-25，14:06
0 个投票
Before the Simulink funciton Counter_Check1() is called, there is this operation "Cnt=Cnt+CntTime1". Then, inside the function, there is this comparison "Cnt>=CntTime1". Maybe due to the fact that the value of "Cnt=InitValue" is zero or positive, the comparison "Cnt>=CntTime1" is always true.
So the "{%Do Nothing}" transition is never reached. It might be okay in terms of the logic, but in terms of software, it is regarded as "unreachable" or "dead code". It is not a good practice to have unreachable or dead code.
Change the "InitValue" to be negative to see if the warning disappear.
2 个评论
VINAY
2026-2-25，15:09
Fangjun Jiang
2026-2-26，15:51
You can attach your model here for others to try.
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2026-2-26，15:51
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