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Old 01-29-2009, 04:40 AM
"doko at ubuntu dot com"
 
Default wrong code building libgsf

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doko at ubuntu dot com changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |debian-gcc at lists dot
| |debian dot org
Keywords| |wrong-code
Known to fail| |4.3.4
Known to work| |4.3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39015

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Old 01-29-2009, 08:10 AM
"jdassen at debian dot org"
 
Default wrong code building libgsf

------- Comment #1 from jdassen at debian dot org 2009-01-29 09:10 -------
Created an attachment (id=17206)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17206&action=view)
The (gtk-doc-tools generated) gsf-scan.c file which gets miscompiled


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Old 01-29-2009, 08:11 AM
"jdassen at debian dot org"
 
Default wrong code building libgsf

------- Comment #2 from jdassen at debian dot org 2009-01-29 09:11 -------
Created an attachment (id=17207)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17207&action=view)
The (gtk-doc-tools generated) gsf-scan.c file which gets miscompiled,
preprocessed.


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Old 01-29-2009, 08:13 AM
"jdassen at debian dot org"
 
Default wrong code building libgsf

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jdassen at debian dot org changed:

What |Removed |Added
----------------------------------------------------------------------------
Attachment #17207|application/octet-stream |text/x-csrc
mime type| |


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Old 01-29-2009, 09:01 AM
"rguenth at gcc dot gnu dot org"
 
Default wrong code building libgsf

------- Comment #3 from rguenth at gcc dot gnu dot org 2009-01-29 10:01 -------
The best option would be to revert that patch on the branch.


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rguenth at gcc dot gnu dot org changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |sje at gcc dot gnu dot org,
| |rguenth at gcc dot gnu dot
| |org
Priority|P3 |P1
Target Milestone|--- |4.3.4


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Old 01-29-2009, 09:14 AM
"doko at ubuntu dot com"
 
Default wrong code building libgsf

------- Comment #4 from doko at ubuntu dot com 2009-01-29 10:14 -------
when Ray wrote he tested with a snapshot build, I assume this was 20090107
without the patch applied, so the status on the trunk is not known yet. will
test with current trunk later.


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Old 01-29-2009, 09:24 AM
"jdassen at debian dot org"
 
Default wrong code building libgsf

------- Comment #5 from jdassen at debian dot org 2009-01-29 10:24 -------
(In reply to comment #4)
> when Ray wrote he tested with a snapshot build, I assume this was 20090107
> without the patch applied,

Yes, I was using sid's gcc-snapshot 20090107-1.


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Old 01-29-2009, 04:00 PM
"sje at cup dot hp dot com"
 
Default wrong code building libgsf

------- Comment #6 from sje at cup dot hp dot com 2009-01-29 17:00 -------
What GCC options was gsf-scan.i compiled with? I am trying to see what
variables are getting/not getting promoted during the compilation and I am not
seeing it affect any variables if I just compile gsf-scan.i with -O[0123].


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Old 01-29-2009, 04:53 PM
"jdassen at debian dot org"
 
Default wrong code building libgsf

------- Comment #7 from jdassen at debian dot org 2009-01-29 17:53 -------
(In reply to comment #3)
> The best option would be to revert that patch on the branch.

Matthias did that in the 4.3.3-3 packages and with them, the problem has
indeed gone away.

(In reply to comment #6)
> What GCC options was gsf-scan.i compiled with?

compile line: /bin/sh ../libtool --mode=compile cc -Wl,-z,defs -Wl,-O1
-Wl,--as-needed -O2 -Wall -Wmissing-prototypes -Wnested-externs
-Wpointer-arith -Wno-sign-compare -DG_DISABLE_DEPRECATED -Wno-system-headers
-Wfloat-equal -Wpointer-arith -Wbad-function-cast -Wwrite-strings
-Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-declarations -Wformat -Wnested-externs -Winline
-Wdeclaration-after-statement -Wundef -W -Wmissing-noreturn
-Wmissing-format-attribute -Wno-pointer-sign -DLIBGSF_GNOMEVFS_VIA_GIO -I../..
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libxml2
-O2 -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith
-Wno-sign-compare -DG_DISABLE_DEPRECATED -Wno-system-headers -Wfloat-equal
-Wpointer-arith -Wbad-function-cast -Wwrite-strings -Wsign-compare
-Waggregate-return -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-declarations -Wformat -Wnested-externs -Winline
-Wdeclaration-after-statement -Wundef -W -Wmissing-noreturn
-Wmissing-format-attribute -Wno-pointer-sign -DLIBGSF_GNOMEVFS_VIA_GIO -c -o
gsf-scan.lo gsf-scan.c

link line: /bin/sh ../libtool --mode=link cc -Wl,-z,defs -Wl,-O1
-Wl,--as-needed -O2 -Wall -Wmissing-prototypes -Wnested-externs
-Wpointer-arith -Wno-sign-compare -DG_DISABLE_DEPRECATED -Wno-system-headers
-Wfloat-equal -Wpointer-arith -Wbad-function-cast -Wwrite-strings
-Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes
-Wmissing-declarations -Wformat -Wnested-externs -Winline
-Wdeclaration-after-statement -Wundef -W -Wmissing-noreturn
-Wmissing-format-attribute -Wno-pointer-sign -DLIBGSF_GNOMEVFS_VIA_GIO
-no-undefined -o gsf-scan gsf-scan.lo ../gsf/libgsf-1.la -lgobject-2.0
-lglib-2.0 -lxml2 -no-undefined


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Old 01-29-2009, 04:53 PM
"pinskia at gmail dot com"
 
Default wrong code building libgsf

------- Comment #8 from pinskia at gmail dot com 2009-01-29 17:53 -------
Subject: Re: [4.3 regression] wrong code building libgsf



Sent from my iPhone

On Jan 29, 2009, at 2:01 AM, "rguenth at gcc dot gnu dot org"
<gcc-bugzilla@gcc.gnu.org
> wrote:

>
>
> ------- Comment #3 from rguenth at gcc dot gnu dot org 2009-01-29
> 10:01 -------
> The best option would be to revert that patch on the branch.

Except it alone could not cause wrong code. Some other pass is
causing it. And then again with a testcase it is hard to figure out
what is going wrong. That patch just disables one small optimization
in one case.

>
>
>
> --
>
> rguenth at gcc dot gnu dot org changed:
>
> What |Removed |Added
> ---
> ---
> ----------------------------------------------------------------------
> CC| |sje at gcc dot gnu
> dot org,
> | |rguenth at gcc dot
> gnu dot
> | |org
> Priority|P3 |P1
> Target Milestone|--- |4.3.4
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39015
>


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