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From: "chefmax at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/66908] Uninitialized variable when compiled with UBsan
Date: Wed, 22 Jul 2015 15:03:00 -0000	[thread overview]
Message-ID: <bug-66908-4-YDYg0T1snC@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-66908-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66908

--- Comment #10 from Maxim Ostapenko <chefmax at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #9)
> Oh silly me!  This should work; Maxim, could you possibly try this patch?

Sorry, Marek, nothing changed for C++ testcase:

      D.6137 = get.__delta;
      D.6138 = D.6137 & 1;
      if (D.6138 == 0) goto <D.6139>; else goto <D.6140>;
  <D.6139>:
      iftmp.1 = get.__pfn;
      goto <D.6141>;
  <D.6140>:
      A.2 = A;
      D.6143 = get.__delta;
      D.6144 = D.6143 >> 1;
      D.6145 = (sizetype) D.6144;
      D.6146 = A.2 + D.6145;
      D.6147 = MEM[(int (*__vtbl_ptr_type) () * *)D.6146];
      D.6148 = get.__pfn;
      D.6149 = (sizetype) D.6148;
      D.6150 = D.6147 + D.6149;
      iftmp.1 = *D.6150;
  <D.6141>:
      A.3 = A;
      D.6152 = D.6143 >> 1;
      D.6153 = (sizetype) D.6152;
      D.6154 = A.3 + D.6153;
      result = iftmp.1 (D.6154);


  parent reply	other threads:[~2015-07-22 15:03 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-17 10:48 [Bug sanitizer/66908] New: " m.guseva at samsung dot com
2015-07-20 18:20 ` [Bug sanitizer/66908] " y.gribov at samsung dot com
2015-07-21 12:34 ` mpolacek at gcc dot gnu.org
2015-07-21 13:48 ` mpolacek at gcc dot gnu.org
2015-07-21 14:40 ` mpolacek at gcc dot gnu.org
2015-07-22  7:38 ` chefmax at gcc dot gnu.org
2015-07-22  8:21 ` mpolacek at gcc dot gnu.org
2015-07-22 12:07 ` mpolacek at gcc dot gnu.org
2015-07-22 12:40 ` mpolacek at gcc dot gnu.org
2015-07-22 14:36 ` mpolacek at gcc dot gnu.org
2015-07-22 15:03 ` chefmax at gcc dot gnu.org [this message]
2015-07-22 15:26 ` mpolacek at gcc dot gnu.org
2015-07-22 17:47 ` chefmax at gcc dot gnu.org
2015-07-23 13:56 ` mpolacek at gcc dot gnu.org
2015-07-23 13:58 ` chefmax at gcc dot gnu.org
2015-08-11 15:47 ` mpolacek at gcc dot gnu.org

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