SEI CERT C Coding Standard

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Recommendations

ERR00-A. Detect errors by checking return values

ERR01-A. Use ferror() to check for any accumulated error

Rules

ERR30-C. Set errno to zero before calling a function

ERR31-C. Don't redefine errno

ERR32-C. Do not rely on indeterminate values of errno

ERR33-C. Only examine the value of errno when it is indicated to be valid by a function's return value

Risk Assessment Summary

Recommendation

Severity

Likelihood

Remediation Cost

Priority

Level

ERR00-A

1 (low)

1 (unlikely)

2 (medium)

P2

L3

Rule

Severity

Likelihood

Remediation Cost

Priority

Level

ERR30-C

1 (low)

1 (unlikely)

1 (high)

P1

L3

Related Rules and Recommendations

DCL09-C. Declare functions that return errno with a return type of errno_t
FIO40-C. Reset strings on fgets() or fgetws() failure
FLP03-C. Detect and handle floating-point errors
FLP32-C. Prevent or detect domain and range errors in math functions
MSC11-C. Incorporate diagnostic tests using assertions
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