[Bug c/25567] New: 4 * set but never used

[Bug c/25567] New: 4 * set but never used

[dcb314 at hotmail dot com]

I just tried to compile the gcc-4.2 snapshot 20051224 with the Intel C
compiler. It said

1.

../../src/gcc-4.2-20051224/gcc/c-decl.c(4486): remark #593: variable
"type_as_written" was set but
never used

The source code is

    tree type_as_written;

I have read the source code, and I agree with the compiler.
The local variable is only ever written to. Suggest delete local variable.

2.

../../src/gcc-4.2-20051224/gcc/tree-cfg.c(3083): remark #593: variable "src"
was set but never used

The source code is

  basic_block new_bb, after_bb, dest, src;

More of the same.

3.

../../src/gcc-4.2-20051224/gcc/tree-outof-ssa.c(1843): remark #593: variable
"changed" was set but
never used

The source code is

  bool changed;

More of the same.

4.

../../src/gcc-4.2-20051224/gcc/tree-ssa-copy.c(352): remark #593: variable
"lhs" was set but never
used

The source code is

  tree lhs, rhs;

More of the same.


-- 
           Summary: 4 * set but never used
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dcb314 at hotmail dot com
  GCC host triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25567

[Bug other/25567] 4 * set but never used

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2005-12-26 17:13 -------
Confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-12-26 17:13:04
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25567

[Bug other/25567] 4 * set but never used

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-01-29 21:19 -------
I am going to fix these issues tomorrow.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25567

[Bug other/25567] 4 * set but never used

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-02-06 14:33 -------
Most of them will be fixed by:
http://gcc.gnu.org/ml/gcc-patches/2006-02/msg00447.html

(I Had forgot the tree-outof-ssa.c variable when I submitted the patch).


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25567

[Bug other/25567] 4 * set but never used

[manu at gcc dot gnu dot org]

------- Comment #4 from manu at gcc dot gnu dot org  2010-05-06 10:56 -------
Thanks for the report. I think all these have been fixed already in GCC 4.6 and
regressions would be detected by the new -Wunused-but-set flags.


-- 

manu at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25567