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GCC Compiler can detect violation of this rule when the -Wstrict-prototypes flag is used. However, it cannot detect violations involving variadic functions, such as the open() example above.

Compass/ROSE could can detect some violations of this rule. In particular, it ensures that all calls to open() supply exactly two arguments if the first argument does not involve O_CREAT, and exactly three arguments if the first argument does involve O_CREAT.

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