New subject: [Bug 37120] PVS-Studio Error: Equivalent branches of if operator

16 Aug 2014


      https://bugs.winehq.org/show_bug.cgi?id=37120
Bug ID: 37120
           Summary: PVS-Studio Error: Equivalent branches of if operator
           Product: Wine
           Version: 1.7.22
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs@winehq.org
          Reporter: lukebenes@hotmail.com
Equivalent branches of if operator
V523 The 'then' statement is equivalent to the 'else' statement. filedlg.c 3302
if(pDIStruct->itemID == liInfos->uSelectedItem)
{
  ilItemImage = (HIMAGELIST) SHGetFileInfoW (
    (LPCWSTR) tmpFolder->pidlItem, 0, &sfi, sizeof (sfi),
    shgfi_flags );
}
else
{
  ilItemImage = (HIMAGELIST) SHGetFileInfoW (
    (LPCWSTR) tmpFolder->pidlItem, 0, &sfi, sizeof (sfi),
    shgfi_flags );
}
This code is either excessive or contains a typo.
V523 The 'then' statement is equivalent to the 'else' statement. genres.c 1130
...
if(win32)
{
  put_word(res, 0);  /* Reserved */
  /* FIXME: The ResType in the NEWHEADER structure should
   * contain 14 according to the MS win32 doc. This is
   * not the case with the BRC compiler and I really doubt
   * the latter. Putting one here is compliant to win16 spec,
   * but who knows the true value?
   */
  put_word(res, 1);  /* ResType */
  put_word(res, icog->nicon);
  for(ico = icog->iconlist; ico; ico = ico->next)
  {
    ...
  }
}
else /* win16 */
{
  put_word(res, 0);  /* Reserved */
  put_word(res, 1);  /* ResType */
  put_word(res, icog->nicon);
  for(ico = icog->iconlist; ico; ico = ico->next)
  {
    ...
  }
}
...
One of the repeating branches is commented. Perhaps this is an incomplete
fragment, not an error, but I decided to point it out anyway.
details on the V523 error here: http://www.viva64.com/en/d/0112/
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[Bug 37120] New: PVS-Studio Error: Equivalent branches of if operator