[Bug middle-end/66276] [5 regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[Bug middle-end/66276] [5 regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|x86_64-unknown-linux-gnu    |
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-05-24
                 CC|                            |trippels at gcc dot gnu.org
               Host|x86_64-unknown-linux-gnu    |
     Ever confirmed|0                           |1
              Build|x86_64-unknown-linux-gnu    |
           Severity|critical                    |normal

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
typedef void *modelica_metatype;
struct mmc_struct
{
  void *data[0];
};
int a, c, d;
extern int _setjmp ();
extern void longjmp ();
modelica_metatype
nobox_arrayGet ()
{
  int b = *(int *) 0 >> 1;
  if (a || 0 > b)
    longjmp ();
  return ((struct mmc_struct *) 0)->data[a - 1];
}

modelica_metatype
omc_Matching_PR__FIFO__FAIRrelabel ()
{
  if (_setjmp ())
  tmp2_top:;
  for (; c; c++)
    switch (c)
    case 0:
      {
        int e = (long) nobox_arrayGet ();
        if (e)
          goto goto_1;
        d = (long) nobox_arrayGet ();
        if (d)
          goto goto_1;
      }
goto_1:
  if (0)
    goto tmp2_top;
  return 0;
}

[Bug middle-end/66276] [5/6 Regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |5.2
            Summary|[5 regression] internal     |[5/6 Regression] internal
                   |compiler error: in          |compiler error: in
                   |get_loop_body, at           |get_loop_body, at
                   |cfgloop.c:856               |cfgloop.c:856

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r211625.

[Bug middle-end/66276] [5/6 Regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.

[Bug middle-end/66276] [5/6 Regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can't reproduce on (only slightly modified) trunk, might be latent there now. 
Investigating on the branch instead.

[Bug middle-end/66276] [5/6 Regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
A dup of PR66101.

*** This bug has been marked as a duplicate of bug 66101 ***

[Bug middle-end/66276] [5/6 Regression] internal compiler error: in get_loop_body, at cfgloop.c:856

[martin.sjolund at liu dot se]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66276

--- Comment #6 from Martin Sjölund <martin.sjolund at liu dot se> ---
Thank you. I can confirm our compiler again bootstraps using gcc 5 branch using
-O2. Sadly, -O2 gives different behaviour than -O1, so I will need to
investigate and possibly file another bug report.
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Subject: [Bug target/65979] [5/6 Regression] [SH] Wrong code is generated with stage1 compiler
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ide979

--- Comment #35 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Oleg Endo from comment #34)
> If 4.8.something doesn't bootstrap, it would be a "4.8 Regression" type of
> bug.  I'd move it to a new PR.

Already. I'll open a new issue then. Just a second.

Adrian