QA·C Help - 3480

	3480	Object/function '%s', with internal linkage, has been defined in a header file.

Declarations and definitions

An object or function with internal linkage has been defined inside a header file. Header files usually contain macro definitions and declarations of typedefs, tags, objects and functions with external linkage. Conventionally, a header file is included in multiple translation units because its primary function is to provide a way of using such items throughout a project without code duplication.

An object or function should be defined in one translation unit only. It follows that such definitions should not be present in a header file except in the unusual situation where the header file is to be included in just one translation unit.

See also:

3406 Object/function '%s', with external linkage, has been defined in a header file.

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