[Bug ipa/59831] ice in cgraph_speculative_call_info with -O3

[trippels at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59831

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-15
                 CC|                            |hubicka at gcc dot gnu.org,
                   |                            |trippels at gcc dot gnu.org
          Component|c                           |ipa
   Target Milestone|---                         |4.9.0
     Ever confirmed|0                           |1

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed.

markus@x4 /tmp % cat test.ii
class A {};
class B {
public:
  A &operator[](int);
};
class C : B {
public:
  virtual int m_fn1() { return 0; }
  A &operator[](int p1) {
    int a;
    a = m_fn1();
    static_cast<void>(__builtin_expect(a, 0) ?: 0);
    return B::operator[](p1);
  }
};

C b;
int *e;
static void sort(C &p1, C &p2) {
  for (int i=0;; i++) {
    A c, d = p2[0];
    p1[0] = c;
    p2[0] = d;
  }
}

void lookupSourceDone() { b[0]; }

void update_sources() {
  if (e) {
    C f;
    sort(f, b);
  }
}

markus@x4 /tmp % g++ -c -O3 test.ii
test.ii: In function ‘A& C::operator[].constprop()’:
test.ii:9:6: internal compiler error: in cgraph_speculative_call_info, at
cgraph.c:1197
   A &operator[](int p1) {
      ^
Please submit a full bug report,