I'm trying to use the /O2 optimization for my project. I checked that the release configuration was enabled (Solution->Properties->Configuration Properties->Configuration->Release) and set Debug Information Format to /Zi but now I don't know what to do for this error.
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justHelloWorld
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What version of Visual Studio are you using? – TriskalJM May 03 '16 at 15:17
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Starting at Solution->Properties is not helpful. It appears you have changed the /O2 setting for the Debug configuration, it uses /RTC. Switch to the Release configuration instead, it already uses /O2 and /Zi so no help is needed. Use Build > Configuration Manager > Active solution configuration to switch. And restore the setting. – Hans Passant May 03 '16 at 16:21
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If you'll post it as an answer I'll chose it :) – justHelloWorld May 04 '16 at 08:05
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1It's not quite related to the question, but I didn't find the answer in time for myself. It you are using the cmake with Visual Studio generator, then the cmake from some version adds `/O2` flag implicitly to the generated Debug project if didn't found it in the `CMAKE_CXX_FLAGS_DEBUG` variable. Basically this variable has used with the `/RTC1` flag already set, so you have to explicitly add the `/Od` flag to it to avoid that behaviour. In my case I did explicitly remove the `/Od` flag from the variable and got the issue. – Andry May 13 '20 at 07:45
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The optimization setting Maximize Speed (/O2) is incompatible to the Basic Runtime Checks setting of Code Generation.
To change the settings for Basic Runtime Checks:
Solution -> Properties -> Configuration Properties -> C/C++ -> Code Generation -> Basic Runtime Checks
Set it to "Default", and it should work.
mohaghighat
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whatever
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3So, When I change the `BasicRuntimeChecks` options to `Default`, the Debugger ignores the debug-points. In this case, I can't debug the codes line-by-line. – Dentrax Mar 25 '18 at 11:28