Error C4702 : unreachable code

Development Programming & Scripting
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1

Hi

We are trying to upgrade our project from 5.3 to 5.5, in the process we are getting couple of errors saying “Error C4702 : unreachable code”. I understand reason of this error but we would like to avoid this error to sustain implemented logic. Would you please let us know if there is a way to suppress this error in UE5.5 source.

Regards

Sultan.

2

Hello!

You can set the TargetRules.AdditionalCompilerArguments member in XXX.Target.cs. This also requires the usage of a unique build environment which will result in using custom Editor\Engine build artefacts.

`///EXAMPLE
public class Custom55EditorTarget : TargetRules
{
public Custom55EditorTarget(TargetInfo Target) : base(Target)
{
Type = TargetType.Editor;
DefaultBuildSettings = BuildSettingsVersion.V5;

ExtraModuleNames.AddRange( new string { “Custom55” } );

//Deactivate warning 4702
AdditionalCompilerArguments = “/wd4702”;
BuildEnvironment = TargetBuildEnvironment.Unique
}
}`

If you want to keep using a shared build environnement (default), you can customize the code for UnrealBuildTool. Look for AppendCLArguments_Global in VCToolchain.cs and add the argument to the Arguments list.

Regads,

3

Thanks a lot Martin

That solved our problem.