---
doc-id: SLM-EPB-MISRA-COMP-001
version: 1.0
status: Released
date: 2026-05-12
---

# MISRA C:2012 Compliance Statement

| Field         | Value                                  |
|---------------|----------------------------------------|
| Project       | demo-epb                               |
| Document ID   | SLM-EPB-MISRA-COMP-001                 |
| Date          | 2026-05-12                             |
| Standard      | MISRA C:2012 (incl. Amendment 1)       |
| Compiler      | GCC 11.2 (Linux CI) / GCC 16.1 (Win)   |
| Checker       | Cppcheck 2.7+ with `--addon=misra`     |

---

## 1. Summary

The source code of demo-epb has been checked against MISRA C:2012. All **Required** and **Mandatory** rules are observed, with the exception of one documented deviation (see MISRA-REC-001).

**Compliance statement:** demo-epb v1.0 is **MISRA C:2012 compliant** taking into account the documented deviation records.

## 2. Scope

| Module                       | MISRA-checked            |
|------------------------------|--------------------------|
| `src/switch_debouncer.{c,h}` | Yes                      |
| `src/actuator_driver.{c,h}`  | Yes                      |
| `src/apply_controller.{c,h}` | Yes                      |
| `src/safety_manager.{c,h}`   | Yes                      |
| `src/epb_types.h`            | Yes                      |
| `src/stubs/*.h`              | Header-only, no MISRA-relevant implementations |
| `tests/**/*`                  | Out of scope (test code) |
| `tools/**/*`                  | Out of scope (Python scripts) |

## 3. Rule activation

The Cppcheck MISRA addon checks the following rule categories:

| Category   | Count  | Activation in project           |
|-----------|--------|----------------------------------|
| Mandatory | 9      | All active, violation blocks build |
| Required  | 119    | All active, violation blocks build |
| Advisory  | 47     | Active at warning level, deviations allowed per record |

## 4. Compliance status per rule category

### 4.1 Mandatory rules (9)

| Rule        | Status     |
|-------------|------------|
| R 9.1, R 9.2, R 9.3 | Compliant |
| R 13.6, R 17.3, R 17.4 | Compliant |
| R 19.1, R 21.13, R 21.17 | Compliant |
| R 21.18, R 21.19, R 21.20 | Compliant |

**Mandatory status: 100% Compliant.**

### 4.2 Required rules

Total: 119 Required rules. Violations: **0**.

Top relevant rules for this project:

| Rule    | Description                                              | Status   |
|---------|----------------------------------------------------------|----------|
| R 8.1   | Type specifier shall be explicit                         | Compliant |
| R 8.2   | Function parameters shall be explicitly named            | Compliant |
| R 8.4   | Compatible declaration shall be visible                  | Compliant |
| R 8.7   | Functions shall not have external linkage if used in one unit | Compliant |
| R 14.1  | Loop counter shall not have essentially floating type    | Compliant |
| R 14.4  | Controlling expression shall have essentially Boolean type | Compliant |
| R 15.4  | At most one break or goto per loop                       | Compliant |
| R 17.7  | Return value of non-void function shall be used         | Compliant (or explicit `(void)`) |
| R 21.3  | No dynamic memory allocation (malloc/free)               | Compliant (no heap use) |
| R 21.4  | No setjmp/longjmp                                        | Compliant |

### 4.3 Advisory rules

47 Advisory rules. Violations are documented via MISRA deviation records.

| Record ID         | Rule    | File                          | Rationale summary           |
|-------------------|---------|-------------------------------|-----------------------------|
| MISRA-REC-001     | R 15.5  | `src/apply_controller.c:64`   | Early-exit for NULL check   |

**Advisory status: 1 deviation record, documented.**

## 5. Check pipeline

```bash
cppcheck \
  --enable=all \
  --inconclusive \
  --error-exitcode=1 \
  --suppress=missingIncludeSystem \
  --suppress=unusedFunction \
  --addon=misra \
  -I src src
```

Checks are run:
- Locally before each commit (recommended)
- Automatically in CI on every push and PR
- Before each release (tag push triggers release.yml)

## 6. Deviation Permits (project-wide)

No project-wide permits are active.

## 7. Re-audit triggers

This compliance statement must be re-created on the following changes:

- Compiler change (e.g. GCC → Clang)
- Major update of Cppcheck or the MISRA addon
- New source files outside `src/`
- MISRA standard update (e.g. C:2025 release)

## 8. Revision history

| Version | Date        | Change              | Author     |
|---------|-------------|---------------------|------------|
| 1.0     | 2026-05-12  | First release v1.0  | S. Lohmaier|