These are the following situations where /GS compiler is not applied.
1) When functions do not contain a buffer
2) When optimizations is not enabled
3) It is obvious when functions are defined to have a variable argument list it cannot create a static cookie.

4) If functions are marked with a naked keyword such as (C++) etc a GS compiler cannot be created.
5) When functions have inline assembly code in the start of the program
6) When a buffer is less than 8 bit type it is not possible and can potentially create a security lapse

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