[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-01-09 04:29 -------
This is basicially fixed now after PR 12456:
t.f: In function 'warn_integer':
t.f:19: warning: 'a' is used uninitialized in this function
'c[1]{lb: 1 sz: 1}t.f: In function 'warn_character':
t.f:33: warning: ' is used uninitialized in this function


But there is only a diagnostic issue now and not just a missed optimization.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[paul dot richard dot thomas at cea dot fr]

------- Comment #7 from paul dot richard dot thomas at cea dot fr  2006-06-01 08:17 -------
This is still the case; Is this a gfortran issue or a gcc one?

If I give the characters length, using any format, even the anonymous warning
goes away.  In fact, any array expression that I have tried is the same; eg.

      real d(8), c(8) 
      d = c 

is ignored.

Paul


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] -Wuninitialized produces wrong error message for characters

[fxcoudert at gcc dot gnu dot org]

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fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fxcoudert at gcc dot gnu dot
                   |                            |org
           Severity|enhancement                 |minor
  GCC build triplet|i686-pc-linux-gnu           |
   GCC host triplet|i686-pc-linux-gnu           |
 GCC target triplet|i686-pc-linux-gnu           |
   Last reconfirmed|2005-12-30 18:42:58         |2006-09-25 12:31:32
               date|                            |
            Summary|gfortran -Wuninitialized    |-Wuninitialized produces
                   |doesn't produce warning on  |wrong error message for
                   |characters                  |characters
            Version|3.3.2                       |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] -Wuninitialized produces wrong error message for characters

[fxcoudert at gcc dot gnu dot org]

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------- Comment #8 from fxcoudert at gcc dot gnu dot org  2007-11-21 18:58 -------
$ cat z.f
      subroutine warn_character(d)
      character c, d
      d = c
      end
$ gfortran -O2 -Wall z.f -c
z.f: In function ‘warn_character’:
z.f:3: warning: ‘c[1]{lb: 1 sz: 1}’ is used uninitialized in this function


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fxcoudert at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2007-09-29 08:14:43         |2007-11-21 18:58:59
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] -Wuninitialized produces wrong error message for characters

[manu at gcc dot gnu dot org]

------- Comment #9 from manu at gcc dot gnu dot org  2008-08-18 16:53 -------
To assess whether this is a middle-end issue, the alias dump (with VOPS and
linenumbers) would be relevant.


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manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |24639
              nThis|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] -Wuninitialized produces wrong error message for characters

[dfranke at gcc dot gnu dot org]

------- Comment #10 from dfranke at gcc dot gnu dot org  2009-04-10 21:53 -------
> To assess whether this is a middle-end issue, the alias dump (with VOPS 
> and linenumbers) would be relevant.

The testcase in #8 still gives the same warning.
Manuel, you refer to the output of -fdump-tree-alias or another one?


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dfranke at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dfranke at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[dhazeghi at yahoo dot com]

------- Additional Comments From dhazeghi at yahoo dot com  2004-01-25 18:04 -------
gfortran gives...

bash-2.05b$ dara/gcc-3.5-tree-ssa/bin/gfortran -Wuninitialized foo.f 
f951: warning: -Wuninitialized is not supported without -O
foo.f: In function `warn_character':
foo.f:23: fatal error: gfc_todo: Not Implemented: CHARACTER inside COMMON block or 
EQUIVALENCE list
compilation terminated.


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           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2004-01-08 18:26:33         |2004-01-25 18:04:22
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-08 18:26 -------
I can reproduce this on 3.4, I have not tried gfortran on the tree-ssa yet.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-01-08 18:26:33
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615

[Bug fortran/13615] g77 -Wuninitialized doesn't produce warning on characters

[smelkov at mph1 dot phys dot spbu dot ru]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13615