http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58410

            Bug ID: 58410
           Summary: Bogus uninitialized variable warning for allocatable
                    derived type array function result
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vladimir.fuka at gmail dot com

gfortran  -c -Wall -O2 uninit.f90 
uninit.f90: In function ‘sub’:
uninit.f90:22:0: warning: ‘new.dim[0].ubound’ may be used uninitialized in this
function [-Wmaybe-uninitialized]
         new = fun()
 ^


gfortran  -c -Wall -O1 uninit.f90
without warning




gfortran  -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/local/gcc-4.8/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.8-20130509/configure --enable-languages=c,c++,fortran
--with-cloog --prefix=/usr/local/gcc-4.8
Thread model: posix
gcc version 4.8.1 20130509 (prerelease) (GCC)
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From: "vladimir.fuka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/58410] Bogus uninitialized variable warning for allocatable derived type array function result
Date: Fri, 13 Sep 2013 08:48:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX410

--- Comment #1 from Vladimir Fuka <vladimir.fuka at gmail dot com> ---
Created attachment 30815
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id0815&actioníit
uninit.f90