[Bug bootstrap/78985] [7 Regression] profiledbootstrap failure by -Wuninitialized

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78985

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-01-20
           Assignee|unassigned at gcc dot gnu.org      |marxin at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I'll try to bisect that, on aarch64 machine I see:

../../gcc/config/aarch64/cortex-a57-fma-steering.c: In member function ‘void
func_fma_steering::analyze()’:
../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: ‘head’ may be
used uninitialized in this function [-Werror=maybe-uninitialized]
    this->analyze_fma_fmul_insn (forest, chain, head);
                                                     ^
../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: ‘forest’ may
be used uninitialized in this function [-Werror=maybe-uninitialized]
../../gcc/config/aarch64/cortex-a57-fma-steering.c:979:53: error: ‘chain’ may
be used uninitialized in this function [-Werror=maybe-uninitialized]

I'll try to bisect..