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This rule appears in the C++ Secure Coding Standard as DCL15-CPP. Declare file-scope objects or functions that do not need external linkage with the storage-class specifier as static.
References
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\[[ISO/IEC 9899:1999|AA. C References#ISO/IEC 9899-1999]\] Section 6.2.2, "Linkages of identifiers" |
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