Examples of errors detected by the V764 diagnostic

V764. Possible incorrect order of arguments passed to function.

Linux Kernel

V764 Possible incorrect order of arguments passed to 'ahc_9005_subdevinfo_valid' function: 'device' and 'vendor'. aic7xxx_pci.c 695

static int ahc_9005_subdevinfo_valid(uint16_t vendor, uint16_t device,
    uint16_t subvendor, uint16_t subdevice);

const struct ahc_pci_identity *
ahc_find_pci_device(ahc_dev_softc_t pci)
{
  ....
  if (ahc_get_pci_function(pci) > 0
   && ahc_9005_subdevinfo_valid(device, vendor, // <=
                                subdevice, subvendor)
   && SUBID_9005_MFUNCENB(subdevice) == 0)
    return (NULL);

  ....
}

CMaNGOS

V764 Possible incorrect order of arguments passed to 'loadVMap' function: 'tileY' and 'tileX'. MapBuilder.cpp 279

void loadMap (uint32 mapID, uint32 tileX, uint32 tileY, ....);
bool loadVMap(uint32 mapID, uint32 tileX, uint32 tileY, ....);

void MapBuilder::buildTile(uint32 mapID,
                           uint32 tileX, uint32 tileY,
                           dtNavMesh* navMesh, uint32 curTile,
                           uint32 tileCount)
{
  ....
  // get heightmap data
  m_terrainBuilder->loadMap(mapID,
                            tileX, tileY,
                            meshData);

  // get model data
  m_terrainBuilder->loadVMap(mapID,
                             tileY, tileX,       // <=
                             meshData);
  ....
}

LibreOffice

V764 Possible incorrect order of arguments passed to 'queryStream' function: 'rUri' and 'rPassword'. tdoc_storage.cxx 271

css::uno::Reference< css::io::XStream >
        queryStream( const css::uno::Reference<
                        css::embed::XStorage > & xParentStorage,
                     const OUString & rPassword,
                     const OUString & rUri,
                     StorageAccessMode eMode,
                     bool bTruncate  );

uno::Reference< io::XOutputStream >
StorageElementFactory::createOutputStream( const OUString & rUri,
                                           const OUString & rPassword,
                                           bool bTruncate )
{
  ....
  uno::Reference< io::XStream > xStream
      = queryStream(
          xParentStorage, rUri, rPassword, READ_WRITE_CREATE, bTruncate );
  ....
}

Espressif IoT Development Framework

V764 Possible incorrect order of arguments passed to 'crypto_generichash_blake2b__init_salt_personal' function: 'salt' and 'personal'. blake2b-ref.c 457

int blake2b_init_salt_personal(blake2b_state *S, const uint8_t outlen,
                               const void *personal, const void *salt);

int
blake2b_salt_personal(uint8_t *out, const void *in, const void *key,
                      const uint8_t outlen, const uint64_t inlen,
                      uint8_t keylen, const void *salt, const void *personal)
{
  ....
  if (blake2b_init_salt_personal(S, outlen, salt, personal) < 0)
    abort();
  ....
}

GTK

V764 [CWE-683] Possible incorrect order of arguments passed to 'translate_keysym' function: 'level' and 'effective_group'. gdkkeys-x11.c 1386

static guint
translate_keysym (GdkX11Keymap   *keymap_x11,
                  guint           hardware_keycode,
                  int             group,
                  GdkModifierType state,
                  int            *effective_group,
                  int            *effective_level)
{
 ....
}

static gboolean
gdk_x11_keymap_translate_keyboard_state (GdkKeymap       *keymap,
                                         guint            hardware_keycode,
                                         GdkModifierType  state,
                                         int              group,
                                         guint           *keyval,
                                         int             *effective_group,
                                         int             *level,
                                         GdkModifierType *consumed_modifiers)
{
  ....
  tmp_keyval = translate_keysym (keymap_x11, hardware_keycode,
                                 group, state,
                                 level, effective_group);
  ....
}

GTK

V764 [CWE-683] Possible incorrect order of arguments passed to 'post_insert_fixup' function: 'line_count_delta' and 'char_count_delta'. gtktextbtree.c 1230

static void    post_insert_fixup    (GtkTextBTree     *tree,
                                     GtkTextLine      *insert_line,
                                     int               char_count_delta,
                                     int               line_count_delta);


void
_gtk_text_btree_insert (GtkTextIter *iter,
                        const char *text,
                        int          len)
{
  ....
  int line_count_delta;                /* Counts change to total number of
                                        * lines in file.
                                        */

  int char_count_delta;                /* change to number of chars */
  ....
  post_insert_fixup (tree, line, line_count_delta, char_count_delta);
  ....
}

Darwin-XNU

V764 Possible incorrect order of arguments passed to 'vsock_pcb_safe_reset_address' function: 'dst' and 'src'. vsock_domain.c 549

static errno_t
vsock_put_message_listening(struct vsockpcb *pcb,
                            enum vsock_operation op,
                            struct vsock_address src,
                            struct vsock_address dst)
{
  switch (op)
  {
    case VSOCK_REQUEST:
      ....
      if (....)
      {
        vsock_pcb_safe_reset_address(pcb, dst, src);
        ....
      }
      ....
      done:
        ....
        break;
    case VSOCK_RESET:
      error = vsock_pcb_safe_reset_address(pcb, dst, src);
      break;
    default:
      vsock_pcb_safe_reset_address(pcb, dst, src);
      ....
      break;
  }
  return error;
}

Similar errors can be found in some other places:

• V764 Possible incorrect order of arguments passed to 'vsock_pcb_safe_reset_address' function: 'dst' and 'src'. vsock_domain.c 587
• V764 Possible incorrect order of arguments passed to 'vsock_pcb_safe_reset_address' function: 'dst' and 'src'. vsock_domain.c 590