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| CERT C++ Secure Coding Standard | DCL02-CPP. Use visually distinct identifiers |
| ISO/IEC TR 24772 | Choice of filenames and other external identifiers [AJN] Choice of clear names [NAI] |
| MISRA-C | Rule 5.6 (advisory): No identifier in one name space should have the same spelling as an identifier in another name space, with the exception of structure and union member names |
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