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Subject: [Bug tree-optimization/55005] [4.8 Regression] gcc.c-torture/execute/loop-3.c FAILs with -fPIC
Date: Tue, 23 Oct 2012 14:32:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55005

--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-10-23 14:32:02 UTC ---
This is similar case as do-1.f90.  We have:

Statement _6 = m_5 * 2147483647;
 is executed at most 2 (bounded by 2) + 1 times in loop 1.

coming from:
  while (i--)
    {
      g (i * 2147483647);
    }
This overflows for i==4 and leads to undefined effect.
So I think the testcase is invalid. 

Honza