[Bug tree-optimization/63595] [5.0 Regression] Segmentation faults inside kernel

["marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63595

--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
Merged function by IPA ICF after expand_thunk is called:

Triangulation<dim>::raw_quad_iterator Triangulation<dim>::end_quad() const
[with int dim = 3; Triangulation<dim>::raw_quad_iterator = TriaRawIterator<3,
TriaObjectAccessor<2, 3> >] (const struct Triangulation * const this)
{
  <bb 2>:
  # DEBUG this => _2(D)
  # DEBUG parent => this_3(D)
  # DEBUG level => -1
  # DEBUG index => -1
  # DEBUG local_data => 0B
  # DEBUG this => _2(D)
  # DEBUG D#265 => &MEM[(struct TriaRawIterator *)_2(D)].accessor
  # DEBUG this => D#265
  # DEBUG parent => this_3(D)
  # DEBUG level => -1
  # DEBUG index => -1
  # DEBUG local_data => 0B
  # DEBUG D#264 => &D#265->D.46601
  # DEBUG this => D#264
  # DEBUG parent => this_3(D)
  # DEBUG level => -1
  # DEBUG index => -1
  # DEBUG D.101330 => 0B
  MEM[(struct TriaAccessor *)_2(D)].present_level = -1;
  MEM[(struct TriaAccessor *)_2(D)].present_index = -1;
  MEM[(struct TriaAccessor *)_2(D)].tria = this_3(D);
  return _2(D);

}


Triangulation<dim>::raw_cell_iterator Triangulation<dim>::end() const [with int
dim = 3; Triangulation<dim>::raw_cell_iterator = TriaRawIterator<3,
CellAccessor<3> >] (const struct Triangulation * const this)
{
  <bb 2>:
  Triangulation<3>::end_quad (this_2(D)); [tail call]
  return;

}
>From gcc-bugs-return-465698-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 04 10:32:52 2014
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From: "richard at netbsd dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/63650]=?UTF-8?Q? conflicting type attributes specified for ‘virtual?=..'
Date: Tue, 04 Nov 2014 10:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idc650

--- Comment #8 from Richard PALO <richard at netbsd dot org> ---
(In reply to Richard PALO from comment #7)
> Further testing indicates that 'cdecl' is okay and that keeping 'regparm(0)'
> causes the error.

Is there perhaps a hint where I could checkout in the code, or is this a case
of a faulty program (in this case xulrunner)...

since this test code compiles without errors/warnings with clang++ 3.5, it
would seem that it should be okay.