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Once this modification is made, the noncompliant code example no longer compiles because the macro expansion results in the conditional expression getchar() (-1), which is no longer syntactically valid. Note that there must be a space after END_OF_FILE because, otherwise, it becomes a function-like macro (and one that is incorrectly formed because −1 cannot be a formal parameter).
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Related Vulnerabilities
Search for vulnerabilities resulting from the violation of this rule on the CERT website.
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