SEI CERT C Coding Standard

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Comment: REM Cost Reform

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STR09-C-EX1: Consecutive values for characters like a~z can be assumed on platforms where ASCII or Unicode is used. This recommendation is primarily concerned with platform portability, for example, if code is migrated from ASCII systems to non-ASCII systems.

Risk Assessment

Rule

Severity

Likelihood

Remediation Cost

Detectable

Repairable

Priority

Level

STR09-C

Low

Unlikely

Yes

Low

No

P3

P2

L3

Automated Detection

Tool

Version

Checker

Description

Astrée
Include Page
Astrée_V
Astrée
_V Supported, but no explicit checker
_V

Supported indirectly via MISRA C:2012 rule 10.1.
Axivion Bauhaus Suite

Include Page
Axivion Bauhaus Suite_V
Axivion Bauhaus Suite_V

CertC-STR09
Helix QAC

Include Page
Helix QAC_V
Helix QAC_V

C2106, C2107
LDRA tool suite
Include Page
LDRA_V
LDRA_V
329 SFully implemented
Parasoft C/C++test
9.5CODSTA-69Fully implementedPRQA QA-C Include PagePRQA QA-C_vPRQA QA-C_v

2106

2107

Include Page
Parasoft_V
Parasoft_V
CERT_C-STR09-a
Expressions with type (plain) char and wchar_t shall not be used as operands to built-in operators other than  =,  ==, != and the unary & operator
PC-lint Plus

Include Page
PC-lint Plus_V
PC-lint Plus_V

9209

Fully supported

RuleChecker

Include Page
RuleChecker_V
RuleChecker_V


Supported indirectly via MISRA C:2012 rule 10.1.
 

Related Guidelines

SEI CERT C++ Coding StandardVOID STR07-CPP. Don't assume numeric values for expressions with type plain character

Bibliography

[Jones 2009]Section 5.2.1, "Character Sets"

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