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Remove local variable initialization to zero value

Control generation of initialization code for local variables set to zero

Since R2023b

Model Configuration Pane: Code Generation / Optimization

Description

The Remove local variable initialization to zero value parameter specifies whether to generate initialization code for local variables set to zero. Clear this parameter to generate code that complies with coding standards such as MISRA C++:2008 Rule 0-1-4 (Polyspace Bug Finder).

Settings

on (default) | off
On

Does not generate initialization code for local variables set to zero.

Off

Generates initialization code for local variables set to zero.

Recommended Settings

ApplicationSetting
DebuggingNo impact
TraceabilityNo impact
Efficiency'on'
Safety precautionNo recommendation

Programmatic Use

Parameter: RemoveLocalVariableInitialization
Type: character vector
Values: 'on' | 'off'
Default: 'on'

Limitations

  • If you clear this parameter, the code generator does not generate zero initializations for local variables that have these types:

    • struct types

    • Types that contain struct types

    • _m128

    • Types that contain a C++ class, such as std::string

    • Types that have symbolic dimensions

  • If you clear this parameter, the code generator does not generate zero initializations for local variables that have a continuous state.

  • If you clear this parameter, the MAT-file logging parameter does not reflect zero initializations of local variables.

Version History

Introduced in R2023b

See Also

(Polyspace Bug Finder)

Topics