LANG.FUNCS.NORETURN : Use of Noreturn

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

LANG.FUNCS.NORETURN : Use of Noreturn

Summary

A use of the _Noreturn specifier, or of features from <stdnoreturn.h>.

Properties

Class Name

Use of Noreturn

Significance

style

Mnemonic

LANG.FUNCS.NORETURN

Categories

MisraC2025	MisraC2025:1.4	Emergent language features shall not be used
MisraC2023	MisraC2023:1.4	Emergent language features shall not be used
Misra2012	Misra2012:1.4	Emergent language features shall not be used
CERT-C	CERT-C:MSC23-C	Beware of vendor-specific library and language differences

Availability

Available for C and C++.

Enabling

Checks for this warning class are disabled by default, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file.

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Use of Noreturn"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

_Noreturn void f(void){ /* 'Use of Noreturn' warning issued here */
  for(;;);                   /* ('Empty for Statement' warning issued here) */
}

/* No warning because this function does not use _Noreturn, even
 * though the function still never returns.
 */
void g(void){
    for(;;);                 /* ('Empty for Statement' warning issued here) */
}

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

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