[Bug tree-optimization/62033] New: okteta 4.13.97 error at -O3 -D_FORTIFY_SOURCE=2

[amodra at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62033

            Bug ID: 62033
           Summary: okteta 4.13.97 error at -O3 -D_FORTIFY_SOURCE=2
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amodra at gmail dot com

Created attachment 33257
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33257&action=edit
delta+hand reduced testcase

Found on powerpc64le with 4.9, and then with x86_64 4.10.0 20140727

Due to __warn_memset_zero_len reference in object, we get
.../bytearraymodel_p.o: In function `memset':
.../bits/string3.h:81: warning: memset used with constant zero length
parameter; this could be due to transposed parameters
collect2: error: ld returned 1 exit status

Compile testcase with 
-O3 -fvisibility=hidden -Werror=return-type -fvisibility-inlines-hidden