SEI CERT C Coding Standard

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Comment: Updated references from C11->C23

According to the C Standard Annex J.2 (133) [ISO/IEC 9899:20112024], the behavior of a program is undefined when

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Implemented

Tool

Version

Checker

Description

Astrée
Include Page
Astrée_V
Astrée_V

chained-errno-function-calls

errno-test-after-wrong-call

Supported
Axivion Bauhaus Suite

Include Page
Axivion Bauhaus Suite_V
Axivion Bauhaus Suite_V

CertC-ERR32
Compass/ROSE



Could detect violations of this rule by looking for signal handlers that themselves call signal(). A violation is reported if the call fails and the handler therefore checks errno. A violation also exists if the signal handler modifies errno without first copying its value elsewhere

Coverity
Include Page
Coverity_V
Coverity_V

MISRA C 2012 Rule 22.8

MISRA C 2012 Rule 22.9

MISRA C 2012 Rule 22.10

Implemented
Cppcheck Premium

Include Page
Cppcheck Premium_V
Cppcheck Premium_V

premium-cert-err32-cPartially implemented
Helix QAC

Include Page
Helix QAC_V
Helix QAC_V

C2031

DF4781, DF4782, DF4783


Klocwork
Include Page
Klocwork_V
Klocwork_V

MISRA.INCL.SIGNAL.2012
MISRA.STDLIB.SIGNAL


LDRA tool suite
Include Page
LDRA_V
LDRA_V
44 SEnhanced enforcement
Parasoft C/C++test
Include Page
c:Parasoft_Vc:
Parasoft_V
MISRA2012-RULE-22_8, MISRA2012-RULE-22_9, MISRA2012-RULE-22_10CERT_C-ERR32-a

Properly use errno value

Polyspace Bug Finder

Include Page
Polyspace Bug Finder_V
Polyspace Bug Finder_V

CERT C: Rule ERR32-CChecks for misuse of errno in a signal handler (rule fully covered)
RuleChecker
Include Page
RuleChecker_V
RuleChecker_V
chained-errno-function-calls
errno-test-after-wrong-call
Supported

Related Vulnerabilities

Search for vulnerabilities resulting from the violation of this rule on the CERT website.

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Bibliography

[ISO/IEC 9899:20112024]Subclause 7.14.1.1, "The signal Function"

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