[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-03-08 16:06 -------
Fixed in 4.0.0.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pdemarco at ppg dot com]

------- Comment #4 from pdemarco at ppg dot com  2008-10-01 12:10 -------
any chance of getting this fixed on 3.4.4 ???


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[dave dot korn at artimi dot com]

------- Comment #5 from dave dot korn at artimi dot com  2008-10-01 14:19 -------
Sorry mate, all 3.x compilers are way past end-of-life now; there will never be
another release.

Your best bet is to hand-edit the header files in your local install.  I don't
remember the exact recipe, but of the two places where this bug crops up, one
can be worked around by adding "__attribute__ ((__unused__))" to the relevant
variable declaration, and the other one has to be fixed by adding
"__attribute__ ((__noinline__))" to the function declaration.

I haven't tested these workaround for performance impact.  Shouldn't be too bad
if you're not calling the functions from the middle of a loop that runs
millions of times.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pdemarco at ppg dot com]

------- Comment #6 from pdemarco at ppg dot com  2008-10-01 18:04 -------
(In reply to comment #5)
> Sorry mate, all 3.x compilers are way past end-of-life now; there will never be
> another release.
okay, but I wish that you wouldn't freeze 3.x when 4.x is still in Alpha.  If I
could upgrade to a stable 4.x for the change... I would.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[paolo dot carlini at oracle dot com]

------- Comment #7 from paolo dot carlini at oracle dot com  2008-10-01 18:17 -------
(In reply to comment #6)
> okay, but I wish that you wouldn't freeze 3.x when 4.x is still in Alpha.

Alpha?!? What do you mean, exactly? Certainly we have a very stable 4.3.x
release series, and previously we had 4.2.x, and previously 4.1.x...




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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pdemarco at ppg dot com]

------- Comment #8 from pdemarco at ppg dot com  2008-10-01 18:19 -------
(In reply to comment #7)
> (In reply to comment #6)
> > okay, but I wish that you wouldn't freeze 3.x when 4.x is still in Alpha.
> Alpha?!? What do you mean, exactly? Certainly we have a very stable 4.3.x
> release series, and previously we had 4.2.x, and previously 4.1.x...

My understanding was that 4.x was not available.  I'll have to re-check.  sorry
for the noise.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[brian at dessent dot net]

------- Comment #9 from brian at dessent dot net  2008-10-01 20:25 -------
Subject: Re:  Spurious 'might be used uninitialized' 
 warnings in STL headers with -O2

You are confusing the state of the Cygwin port of gcc with gcc in
general.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pdemarco at ppg dot com]

------- Comment #10 from pdemarco at ppg dot com  2008-10-03 12:53 -------
(In reply to comment #9)
> Subject: Re:  Spurious 'might be used uninitialized' 
>  warnings in STL headers with -O2
> You are confusing the state of the Cygwin port of gcc with gcc in
> general.

Possibly, but I cannot find the download for 4.x.x.
Why does it have to be so confusing ?

http://sourceforge.net/project/showfiles.php?group_id=2435

This is the location that I got ALPHA from.
It appears that the best 4.x.x download is: Testing:
gcc-4.3.0-20080502-mingw32-alpha

I see no other reasonable downloads.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[paolo dot carlini at oracle dot com]

------- Comment #11 from paolo dot carlini at oracle dot com  2008-10-03 13:00 -------
Brian is right:

  http://gcc.gnu.org/mirrors.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[ian at airs dot com]

------- Additional Comments From ian at airs dot com  2005-09-06 18:59 -------
Confirmed that this happens with 3.4 for the i686-pc-cygwin target, though not
for the i686-pc-linux-gnu target.  It is fixed in current mainline for both targets.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ian at airs dot com
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
      Known to fail|                            |3.4.4
      Known to work|                            |4.1.0
   Last reconfirmed|0000-00-00 00:00:00         |2005-09-06 18:59:23
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[james at juranfamily dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |james at juranfamily dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[dave dot korn at artimi dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dave dot korn at artimi dot
                   |                            |com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207

[Bug middle-end/22207] Spurious 'might be used uninitialized' warnings in STL headers with -O2

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libstdc++                   |middle-end
   GCC host triplet|i686-pc-cygwin              |
 GCC target triplet|                            |i686-pc-cygwin
           Keywords|                            |diagnostic


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22207