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This non-compliant code example illustrates shows a function called opener() that returns errno error codes. However, the function is declared as returning an int. Consequently, the meaning of the return value is not as clear as it could be.
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\[[ISO/IEC 9899-:1999|AA. C References#ISO/IEC 9899-1999]\] Section 6.7.5.3, "Function declarators (including prototypes)" \[[ISO/IEC PDTR 24772|AA. C References#ISO/IEC PDTR 24772]\] "NZN Returning error status" \[[ISO/IEC TR 24731-1-:2007|AA. C References#ISO/IEC TR 24731-1-:2007]\] \[[MISRA 04|AA. C References#MISRA 04]\] Rule 20.5 \[[Open Group 04|AA. C References#Open Group 04]\] |
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