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debugging weirdness

Started by maya18222 Jun 30, 2008 at 9:22 AM 2 replies 750+ views

Original Post

Jun 30, 2008 at 9:22 AM

Why does the following happen? As you can see, i have a variable data1, which doesn't appear in the debug windows, not even if i add it to the watch list. Im having the same issue in other parts of the code, variables that i need to debug arnt coming up, and if you have a look in the autos window, there's lots of empty assigned debug variables. screen shot below

OldGuy

Jul 1, 2008 at 11:27 PM

Do you have any optimization turned on? Optimizers sometimes get rid of variables that they deem unnecessary (and use different techniques to replace them). Try turning optimization off and retrying.

_Sigma

119

_Sigma

Jul 1, 2008 at 11:57 PM

Quote:
Original post by OldGuy
Do you have any optimization turned on? Optimizers sometimes get rid of variables that they deem unnecessary (and use different techniques to replace them). Try turning optimization off and retrying.

It looks like a debug build -> I didn't think many (if any?) of the VS optimizations were allowed...

What is PNT? Class, typedef, etc?

OldGuy

Jul 2, 2008 at 1:16 AM

Could be a Release build. You can combine, for example, /Z7 and /O2. This allowed me to reproduce the problem of not being able to see certain variables in the watch window.

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