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FindBugs version 1.3.9 can detect violations of this rule guideline with the INT: Bad comparison of nonnegative value with negative constant detector.

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Search for vulnerabilities resulting from the violation of this rule guideline on the CERT website.

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This rule guideline appears in the C Secure Coding Standard as FIO34-C. Use int to capture the return value of character IO functions.

This rule guideline appears in the C++ Secure Coding Standard as FIO34-CPP. Use int to capture the return value of character IO functions.

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