SEI CERT C Coding Standard

Preprocessor (PRE) - PRE30-C. Do not create a universal character name through concatenation
2.1.2 Compliant Solution
This compliant solution uses a universal character name but does not create it by using token concatenation:
#define assign(ucn, val) ucn = val
void func(void) {
int \u0401;
/* ... */
assign(\u0401, 4);
/* ... */
}
2.1.3 Risk Assessment
Creating a universal character name through token concatenation results in undefined behavior.
Rule Severity Likelihood Remediation Cost Priority Level
PRE30-C Low Unlikely Medium P2 L3
2.1.4 Bibliography
[ISO/IEC 10646-2003]
[ISO/IEC 9899:2011]
Subclause 5.1.1.2, “Translation Phases”
SEI CERT C Coding Standard: Rules for Developing Safe, Reliable, and Secure Systems 24
Software Engineering Institute | Carnegie Mellon University
[DISTRIBUTION STATEMENT A] Approved for public release and unlimited distribution.