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Examples of errors detected by the V796…

Examples of errors detected by the V796 diagnostic

V796. A 'break' statement is probably missing in a 'switch' statement.


Chromium

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. command_buffer_metrics.cc 125


void RecordContextLost(ContextType type,
                       CommandBufferContextLostReason reason) {
  switch (type) {
    ....
    case MEDIA_CONTEXT:
      UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.Media",
        reason, CONTEXT_LOST_REASON_MAX_ENUM);
      break;
    case MUS_CLIENT_CONTEXT:
      UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.MusClient",
        reason, CONTEXT_LOST_REASON_MAX_ENUM);
      break;
    case UI_COMPOSITOR_CONTEXT:
      UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.UICompositor",
        reason, CONTEXT_LOST_REASON_MAX_ENUM);
    case CONTEXT_TYPE_UNKNOWN:
      UMA_HISTOGRAM_ENUMERATION("GPU.ContextLost.Unknown",
        reason, CONTEXT_LOST_REASON_MAX_ENUM);
      break;
  }
}

Chromium

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. system_input_injector_mus.cc 78


void SystemInputInjectorMus::InjectMouseButton(
  ui::EventFlags button, bool down)
{
  ....
  int modifier = ui::MODIFIER_NONE;
  switch (button) {
    case ui::EF_LEFT_MOUSE_BUTTON:
      modifier = ui::MODIFIER_LEFT_MOUSE_BUTTON;
      break;
    case ui::EF_RIGHT_MOUSE_BUTTON:
      modifier = ui::MODIFIER_RIGHT_MOUSE_BUTTON;
      break;
    case ui::EF_MIDDLE_MOUSE_BUTTON:
      modifier = ui::MODIFIER_MIDDLE_MOUSE_BUTTON;
    default:
      LOG(WARNING) << "Invalid flag: " << button
                   << " for the button parameter";
      return;
  }
  ....
}

Android

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. a2dp_vendor_ldac.cc 912


bool A2dpCodecConfigLdac::setCodecConfig(....) {
  ....
  case BTAV_A2DP_CODEC_SAMPLE_RATE_192000:
    if (sampleRate & A2DP_LDAC_SAMPLING_FREQ_192000) {
      result_config_cie.sampleRate =
          A2DP_LDAC_SAMPLING_FREQ_192000;
      codec_capability_.sample_rate =
          codec_user_config_.sample_rate;
      codec_config_.sample_rate =
          codec_user_config_.sample_rate;
    }
  case BTAV_A2DP_CODEC_SAMPLE_RATE_16000:
  case BTAV_A2DP_CODEC_SAMPLE_RATE_24000:
  case BTAV_A2DP_CODEC_SAMPLE_RATE_NONE:
    codec_capability_.sample_rate =
        BTAV_A2DP_CODEC_SAMPLE_RATE_NONE;
    codec_config_.sample_rate =
        BTAV_A2DP_CODEC_SAMPLE_RATE_NONE;
    break;
  ....
}

Android

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. IAndroidConfiguration.cpp 90


static SLresult IAndroidConfiguration_GetConfiguration(....)
{
  ....
  switch (IObjectToObjectID((thiz)->mThis)) {
  case SL_OBJECTID_AUDIORECORDER:
    result = android_audioRecorder_getConfig(
      (CAudioRecorder *) thiz->mThis, configKey,
      pValueSize, pConfigValue);
    break;
  case SL_OBJECTID_AUDIOPLAYER:
    result = android_audioPlayer_getConfig(
      (CAudioPlayer *) thiz->mThis, configKey,
      pValueSize, pConfigValue);
  default:
    result = SL_RESULT_FEATURE_UNSUPPORTED;
    break;
  }
  ....
}

Android

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. EffectsFactory.cpp 118


Return<void> EffectsFactory::getAllDescriptors(....)  {
  ....
  switch (status) {
    case -ENOSYS: {
      // Effect list has changed.
      goto restart;
    }
    case -ENOENT: {
      // No more effects available.
      result.resize(i);
    }
    default: {
      result.resize(0);
      retval = Result::NOT_INITIALIZED;
    }
  }
  ....
}

Android

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. EffectReverb.cpp 1847


int Reverb_getParameter(....)
{
  ....
  case REVERB_PARAM_REFLECTIONS_LEVEL:
    *(uint16_t *)pValue = 0;
  case REVERB_PARAM_REFLECTIONS_DELAY:
    *(uint32_t *)pValue = 0;
  case REVERB_PARAM_REVERB_DELAY:
    *(uint32_t *)pValue = 0;
  break;
  ....
}

System Shock

V796 It is possible that 'break' statement is missing in switch statement. OLH.C 142


bool olh_candidate(ObjID obj)
{
  ....
  switch (objs[obj].obclass)
  {
    case CLASS_DOOR:
      ....
      break;
    case CLASS_BIGSTUFF:
      ....
      if (....)
      {
        ....
        break;
      }
    case CLASS_SMALLSTUFF:
      ....
      if (....)
      {
        ....
        break;
      }
    // smallstuff falls through to default.
    default:
      ....
      break;
  }
}

Similar errors can be found in some other places:

  • V796 It is possible that 'break' statement is missing in switch statement. GAMEREND.C 777

Godot Engine

V796 CWE-484 It is possible that 'break' statement is missing in switch statement. gdscript_compiler.cpp 135


GDScriptDataType GDScriptCompiler::_gdtype_from_datatype(
  const GDScriptParser::DataType &p_datatype) const
{
  ....
  switch (p_datatype.kind) {
     ....
    case GDScriptParser::DataType::NATIVE: {
      result.kind = GDScriptDataType::NATIVE;
      result.native_type = p_datatype.native_type;
    } break;
    case GDScriptParser::DataType::SCRIPT: {
      result.kind = GDScriptDataType::SCRIPT;
      result.script_type = p_datatype.script_type;
      result.native_type = result.script_type->get_instance_base_type();
    }
    case GDScriptParser::DataType::GDSCRIPT: {
      result.kind = GDScriptDataType::GDSCRIPT;
      result.script_type = p_datatype.script_type;
      result.native_type = result.script_type->get_instance_base_type();
    } break;
  ....
}

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