[Bug tree-optimization/55054] New: -Wuninitialized warning in tree-ssa-loop-ivcanon.c

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55054

             Bug #: 55054
           Summary: -Wuninitialized warning in tree-ssa-loop-ivcanon.c
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: mpola...@gcc.gnu.org


Building gcc on x86_64 with gcc (GCC) 4.6.3 20120306 (Red Hat 4.6.3-2) says:

/home/marek/src/gcc/gcc/tree-ssa-loop-ivcanon.c: In function ‘bool
canonicalize_loop_induction_variables(loop*, bool, unroll_level, bool, bool*,
bitmap)’:
/home/marek/src/gcc/gcc/tree-ssa-loop-ivcanon.c:518:46: warning: ‘n_unroll’ may
be used uninitialized in this function [-Wuninitialized]
/home/marek/src/gcc/gcc/tree-ssa-loop-ivcanon.c:404:26: note: ‘n_unroll’ was
declared here

Just setting n_unroll to 0 is enough.