Примеры ошибок, обнаруженных с помощью диагностики V763

V763. Parameter is always rewritten in function body before being used.

Source Engine SDK

V763 Parameter 'iElement' is always rewritten in function body before being used. dt_utlvector_send.cpp 49


void SendProxy_UtlVectorElement(...., int iElement, ....)
{
  ....
  iElement = pProp->GetElementStride();
  ....
  if (iElement >= pUtlVec->Count())
  {
    ....
  }
  else
  {
    pExtra->m_ProxyFn(
      pProp, pData,
      (char*)pUtlVec->Base() + iElement*pExtra->m_ElementStride,
      pOut, 0, objectID);
  }
}

Similar errors can be found in some other places:

V763 Parameter 'flDist' is always rewritten in function body before being used. npc_cranedriver.cpp 180
V763 Parameter 'flDist' is always rewritten in function body before being used. npc_strider.cpp 2561

GCC

V763 Parameter 'flags' is always rewritten in function body before being used. call.cc 994, call.cc 981


static conversion *
build_aggr_conv (tree type,
                 tree ctor,
                 int flags,                               // <=
                 tsubst_flags_t complain)
{
  unsigned HOST_WIDE_INT i = 0;
  conversion *c;
  tree field = next_aggregate_field (TYPE_FIELDS (type));
  tree empty_ctor = NULL_TREE;
  hash_set<tree, true> pset;
  flags = LOOKUP_IMPLICIT|LOOKUP_NO_NARROWING;            // <=
  ....
}

MuseScore

V763 Parameter 'y' is always rewritten in function body before being used. tremolo.cpp 287


void Tremolo::layoutOneNoteTremolo(qreal x, qreal y, qreal spatium)
{

  bool up = chord()->up();
  int line = up ? chord()->upLine() : chord()->downLine();
  ....
  qreal yLine = line + t;
  ....
  y = yLine * .5 * spatium;

  setPos(x, y);
}

Command & Conquer

V763 Parameter 'coord' is always rewritten in function body before being used. DISPLAY.CPP 4031


void DisplayClass::Set_Tactical_Position(COORDINATE coord)
{
  int xx = 0;
  int yy = 0;

  Confine_Rect(&xx, &yy, TacLeptonWidth, TacLeptonHeight,
    Cell_To_Lepton(MapCellWidth) + GlyphXClientSidebarWidthInLeptons,
    Cell_To_Lepton(MapCellHeight));

  coord = XY_Coord(xx + Cell_To_Lepton(MapCellX), yy + Cell_To_Lepton(....));

  if (ScenarioInit) {
    TacticalCoord = coord;
  }
  DesiredTacticalCoord = coord;
  IsToRedraw = true;
  Flag_To_Redraw(false);
}

Similar errors can be found in some other places:

V763 Parameter 'coord' is always rewritten in function body before being used. DISPLAY.CPP 4251

GCC

V763 Parameter 'off' is always rewritten in function body before being used. ipa-polymorphic-call.c 766


bool
ipa_polymorphic_call_context::set_by_invariant (tree cst,
            tree otr_type,
            HOST_WIDE_INT off)
{
  poly_int64 offset2, size, max_size;
  bool reverse;
  tree base;

  invalid = false;
  off = 0;
  ....
  if (otr_type && !contains_type_p (TREE_TYPE (base), off, otr_type))
    return false;

  set_by_decl (base, off);
  return true;
}

Haiku Operation System

V763 Parameter 'menu' is always rewritten in function body before being used. video.cpp 648


bool
video_mode_hook(Menu *menu, MenuItem *item)
{
  video_mode *mode = NULL;

  menu = item->Submenu();
  item = menu->FindMarked();
  ....
}

Similar errors can be found in some other places:

V763 Parameter 'force_16bit' is always rewritten in function body before being used. ata_adapter.cpp 151
V763 Parameter 'force_16bit' is always rewritten in function body before being used. ata_adapter.cpp 179
V763 Parameter 'menu' is always rewritten in function body before being used. video.cpp 264
And 16 additional diagnostic messages.

Stellarium

V763 Parameter 'updatePos' is always rewritten in function body before being used. StelGuiItems.cpp 690


void BottomStelBar::updateText(bool updatePos)
{
  .... // the index argument is not used here
  updatePos = true;
  ....
}

LibreOffice

V763 Parameter 'nNativeNumberMode' is always rewritten in function body before being used. calendar_jewish.cxx 286


OUString SAL_CALL
Calendar_jewish::getDisplayString(...., sal_Int16 nNativeNumberMode )
{
  // make Hebrew number for Jewish calendar
  nNativeNumberMode = NativeNumberMode::NATNUM2;

  if (nCalendarDisplayCode == CalendarDisplayCode::SHORT_YEAR) {
    sal_Int32 value = getValue(CalendarFieldIndex::YEAR) % 1000;
    return mxNatNum->getNativeNumberString(...., nNativeNumberMode );
  }
  else
    return Calendar_gregorian::getDisplayString(...., nNativeNumberMode );
}

Similar errors can be found in some other places:

V763 Parameter 'bExtendedInfo' is always rewritten in function body before being used. graphicfilter2.cxx 442
V763 Parameter 'nVerbID' is always rewritten in function body before being used. oleembed.cxx 841
V763 Parameter 'pCursor' is always rewritten in function body before being used. edlingu.cxx 843
And 2 additional diagnostic messages.

NCBI Genome Workbench

V763 Parameter 'w1' is always rewritten in function body before being used. bmfunc.h 5363


/// Bit COUNT functor
template<typename W> struct bit_COUNT
{
  W operator()(W w1, W w2)
  {
    w1 = 0;
    BM_INCWORD_BITCOUNT(w1, w2);
    return w1;
  }
};

Chromium

V763 Parameter 'index' is always rewritten in function body before being used. tab_strip_model_experimental.cc 314


void TabStripModelExperimental::InsertWebContentsAt(
    int index,
    content::WebContents* contents,
    int add_types)
{
  .... // the index argument is not used

  index = tab_view_count_ - 1;

  ....
}

The value passed in the index argument is not used.

ReOpenLDAP

V763 Parameter 'rc' is always rewritten in function body before being used. tls_o.c 426


static char *
tlso_session_errmsg(...., int rc, ....)
{
  char err[256] = "";
  const char *certerr=NULL;
  tlso_session *s = (tlso_session *)sess;
  rc = ERR_peek_error(); // <=
  ....
}

Inkscape

V763 Parameter 'new_value' is always rewritten in function body before being used. sp-xmlview-tree.cpp 259


void element_attr_changed(.... const gchar * new_value, ....)
{
  NodeData *data = static_cast<NodeData *>(ptr);
  gchar *label;

  if (data->tree->blocked) return;

  if (0 != strcmp (key, "id") &&
      0 != strcmp (key, "inkscape:label"))
        return;

  new_value = repr->attribute("id"); // <=
  ....
}

Similar errors can be found in some other places: