Can VM macros protect switch statements? We are now having an issue with VM macros crashing the application.

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Can VM macros protect switch statements? We are now having an issue with VM macros crashing the application.

Switch-Case statements cannot work with VM macros in most compilers.

 

Compilers generate a direct jump table in the data section which directly jumps to each "case" statement. When the code is virtualized, the jump goes into a virtualized (garbage) code and it produces exception. You can use a workaround to protect your switch-case statements with VM macros, like:

 

switch (var)

{

   case 0:

 

   VM_START

 

   // your code

 

   VM_END

 

   case 1:

 

   VM_START

 

   // your code

 

   VM_END

 

   ...

}