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MSC07-EX1
MSC07-EX1
MSC07-C-EX1: In some situations, seemingly dead code may make software resilient. An example is the default label in a switch statement whose controlling expression has an enumerated type and that specifies labels for all enumerations of the type. (See MSC01-C. Strive for logical completeness.) Because valid values of an enumerated type include all those of its underlying integer type, unless enumeration constants are provided for all those values, the default label is appropriate and necessary.

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Tool

Version

Checker

Description

CodeSonar
Include Page
CodeSonar_V
CodeSonar_V

LANG.STRUCT.UC

Unreachable {Call, Computation, Conditional, Control Flow, Data Flow}

Coverity

Include Page
Coverity_V
Coverity_V

DEADCODE


UNREACHABLE

Can detect the specific instance where code can never be reached because of a logical contradiction or a dead "default" in switch statement

Can detect the instances where code block is unreachable because of the syntactic structure of the code

GCC

Include Page
GCC_V
GCC_V

 

Can detect violations of this recommendation when the -Wunreachable-code flag is used

Klocwork

Include Page
Klocwork_V
Klocwork_V

LV_UNUSED.GEN VA_UNUSED.* UNREACH.*

 

LDRA tool suite

Include Page
LDRA_V
LDRA_V

1 J
139 S
140 S

Fully implemented

Parasoft C/C++test9.5MISRA2008-0_1_{a,b,c,d,e,f,g}, BD-PB-SWITCHFully implemented
PRQA QA-C
Include Page
PRQA QA-C_v
PRQA QA-C_v

1501,1503,2008,2880,2881,2882,2883,2877,3196,

3202,3203,3205,3206,3207,3210,3219,3229,3404,

3422,3423,3425,3470,2980,2981,2982,2983,2984,2985,2986

Fully implemented
SonarQube Plugin  
Include Page
SonarQube C/C++ Plugin_V
SonarQube C/C++ Plugin_V

S1763, S1751

 

Splint

Include Page
Splint_V
Splint_V

 

Can detect violations of this recommendation when the -Wunreachable-code flag is used

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