Why the variables was shown "Identifier not found" in the expressions area?

Sunglin Chen

Dear Friends,

I want to monitor the variables value in the debug mode, but the variables was shown "identifier not found" in the expressions dialog box.

I want to know why? Thank you very much.

over 12 years ago

0 chethu gowda over 12 years ago

Genius 4090 points

The compiler optimizes the code and stores thes local variables ubTmp and unTmp in the registers for faster operation and releases this memory once it finds the scope is over because these local variables are not accessed anywhere in future within the same function.

So you can't read these variable at the place where you have put the breakpoint.

0 Sunglin Chen over 12 years ago in reply to chethu gowda

Expert 2335 points

Dear Friends,

In this case, do you know how to trace the variables or any suggestions of debugging skill will be appreciated. Thanks.

0 chethu gowda over 12 years ago in reply to Sunglin Chen

Genius 4090 points

introduce these varialbes in global scope, i.e declare ubTmp and unTmp outside your function. you would be able to see their values once the breakpoint hits.

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Why the variables was shown "Identifier not found" in the expressions area?