Cppcheck

CodeRabbit runs Cppcheck to find issues in C and C++ code.

Cppcheck is a static code analysis tool for the C and C++ programming languages.

CodeRabbit runs Cppcheck v2.22.0.

Files

Cppcheck will run on files with the following extensions:

• .cpp
• .cxx
• .cc
• .c
• .tpp
• .txx

Configuration

enabled · boolean · default: true

Enable Cppcheck

.coderabbit.yaml

.coderabbit.yaml

reviews:
  tools:
    cppcheck:
      enabled: true

Web UI

In your organization or repository settings, go to Reviews → Tools and turn the tool on or off with its toggle.

CodeRabbit passes the following Cppcheck options based on the selected profile:

Chill

--disable=warning,style,information,portability,unusedFunction

Assertive

--disable=warning,style,information

CodeRabbit uses fixed analysis settings based on the selected profile. Repository Cppcheck configuration files and custom command-line flags are not loaded. Inline suppression comments in source files are supported.

When we skip Cppcheck

CodeRabbit will skip running Cppcheck when:

• Cppcheck is already running in GitHub Actions, GitLab CI, CircleCI, or Azure Pipelines.

Filtered categories

The following categories are automatically filtered out in both Chill and Assertive modes:

• normalCheckLevelMaxBranches - too many branches
• toomanyconfigs - too many configurations
• missingIncludeSystem - missing system includes
• missingInclude - missing includes
• nullPointer - null pointer diagnostics
• unmatchedSuppression - unmatched suppressions

Profile behavior

In Chill mode:

• Disables: warning, style, information, portability, unusedFunction
• Adds command-line suppression flags for the filtered categories listed above
• Only reports findings with severity “warning” or “error”
• Filters out the categories listed above from review findings

In Assertive mode:

• Disables: warning, style, information
• Does not add command-line suppression flags
• Reports findings of all remaining severities after filtering out the categories listed above

Include directory discovery

Cppcheck automatically discovers top-level directories containing header files (.h, .hpp, .hxx, .hh) and adds them as include directories. This discovery is limited to a maximum depth of 5 levels to avoid scanning very large repositories.

Links

• Cppcheck Configuration