[Bug bootstrap/77768] [7 Regression] LTO/PGO -O3 bootstrap broken: tree-vrp.c:11053:0: internal compiler error: Segmentation fault

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77768

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |lto
                 CC|                            |rguenth at gcc dot gnu.org
   Target Milestone|---                         |7.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmpf, that's little information.  I guess it's caused by

      /* Pick up flags from a devirtualization target.  */
      tree fn = gimple_call_fn (stmt);
      int extra_fnflags = 0;
      if (fn && TREE_CODE (fn) == SSA_NAME)
        {
          fn = SSA_VAL (fn);
          if (TREE_CODE (fn) == ADDR_EXPR
              && TREE_CODE (TREE_OPERAND (fn, 0)) == FUNCTION_DECL)
            extra_fnflags = flags_from_decl_or_type (TREE_OPERAND (fn, 0));
        }

but I cant' see what the issue is whith this (how it can even segfault).