Is there a PR open for this code?

[Andrew Pinski]

On Thu, Sep 11, 2008 at 7:31 AM,  <jdelia@intec.unl.edu.ar> wrote:
> Dear all,
>
> Using the compilers
>
> $ gfortran  --version
> GNU Fortran (GCC) 4.4.0 20080302 (experimental) [trunk revision 132813]
> Copyright (C) 2007 Free Software Foundation, Inc.
>
> $ ifort --version
> ifort (IFORT) 9.0  20051201
>
> Here there are some experiments:
>
> 1) With "test31.f90"
>
> $ gfortran -Wuninitialized -o test31.exe test31.f90
> f951: warning: -Wuninitialized is not supported without -O

-Wunitialized is support at -O0 since the following patch:
2008-07-31  Richard Guenther  <rguenther@suse.de>

        * passes.c (init_optimization_passes): Always call
        pass_early_warn_uninitialized.
        * opts.c (decode_options): Do not warn about -Wuninitialized at -O0.
        * doc/invoke.texi (-Wuninitialized): Correct for enabling at -O0.
        * doc/passes.texi (Warn for uninitialized variables): Adjust.

So you are using a semi old revision of 4.4 :).

With the trunk as of:
gcc version 4.4.0 20080910 (experimental) [trunk revision 140245] (GCC)

I get the following warnings:
[dhcp-10-98-10-23:~] apinski% ~/local-gcc/bin/gfortran -W -Wall t.f90
t.f90: In function 'no_leak1':
t.f90:4: warning: 'i' is used uninitialized in this function
t.f90:4: warning: 'n' is used uninitialized in this function

I get those at -O0, -O1, -O2 and -O3.

-- Pinski