[Bug ipa/85549] New: [8/9 Regression] Infinite loop in ilmbase package

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85549

            Bug ID: 85549
           Summary: [8/9 Regression] Infinite loop in ilmbase package
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: jamborm at gcc dot gnu.org, marxin at gcc dot gnu.org
  Target Milestone: ---

Starting from r259319, I see that ilbmbase.ii is miscompiled.

#1637 0x000000000042e6aa in void (anonymous
namespace)::visit<Imath_2_2::Vec2<short> >(int&, int, int, std::vector<int,
std::allocator<
int> >&, std::vector<Imath_2_2::Vec2<short>,
std::allocator<Imath_2_2::Vec2<short> > >&) [clone .constprop.47] ()
    at ../Iex/IexBaseExc.h:154
---Type <return> to continue, or q <return> to quit---
#1638 0x000000000042e6aa in void (anonymous
namespace)::visit<Imath_2_2::Vec2<short> >(int&, int, int, std::vector<int,
std::allocator<
int> >&, std::vector<Imath_2_2::Vec2<short>,
std::allocator<Imath_2_2::Vec2<short> > >&) [clone .constprop.47] ()
    at ../Iex/IexBaseExc.h:154
#1639 0x000000000042e6aa in void (anonymous
namespace)::visit<Imath_2_2::Vec2<short> >(int&, int, int, std::vector<int,
std::allocator<
int> >&, std::vector<Imath_2_2::Vec2<short>,
std::allocator<Imath_2_2::Vec2<short> > >&) [clone .constprop.47] ()
    at ../Iex/IexBaseExc.h:154
#1640 0x000000000042e6aa in void (anonymous
namespace)::visit<Imath_2_2::Vec2<short> >(int&, int, int, std::vector<int,
std::allocator<
int> >&, std::vector<Imath_2_2::Vec2<short>,
std::allocator<Imath_2_2::Vec2<short> > >&) [clone .constprop.47] ()
    at ../Iex/IexBaseExc.h:154
#1641 0x000000000042e6aa in void (anonymous
namespace)::visit<Imath_2_2::Vec2<short> >(int&, int, int, std::vector<int,
std::allocator<
int> >&, std::vector<Imath_2_2::Vec2<short>,
std::allocator<Imath_2_2::Vec2<short> > >&) [clone .constprop.47] ()
    at ../Iex/IexBaseExc.h:154
#1642 0x000000000042e808 in testBox() () at ../Iex/IexBaseExc.h:154
#1643 0x0000000000403664 in main (argc=<optimized out>, argv=<optimized out>)
at main.cpp:67

I'll try to reduce the test-case. Can you Martin please take a look at 3 IPA CP
clones that all created here?