* [devel] RPM::Database
@ 2005-10-18 23:30 Alexey Tourbin
2005-10-19 9:05 ` Dmitry V. Levin
0 siblings, 1 reply; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-18 23:30 UTC (permalink / raw)
To: devel
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at@mash ~ $ perl -MRPM::Database -e1
panic: sv_setpvn called with negative strlen at /usr/lib/perl5/i386-linux/DynaLoader.pm line 253.
Compilation failed in require at /usr/lib/perl5/vendor_perl/i386-linux/RPM/Database.pm line 35.
Compilation failed in require.
BEGIN failed--compilation aborted.
at@mash ~ $
Вчера всё работало.
Что бы это могло быть?
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* Re: [devel] RPM::Database
2005-10-18 23:30 [devel] RPM::Database Alexey Tourbin
@ 2005-10-19 9:05 ` Dmitry V. Levin
2005-10-19 13:01 ` [devel] RPM::Database Alexey Tourbin
0 siblings, 1 reply; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 9:05 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 03:30:18AM +0400, Alexey Tourbin wrote:
> at@mash ~ $ perl -MRPM::Database -e1
> panic: sv_setpvn called with negative strlen at /usr/lib/perl5/i386-linux/DynaLoader.pm line 253.
> Compilation failed in require at /usr/lib/perl5/vendor_perl/i386-linux/RPM/Database.pm line 35.
> Compilation failed in require.
> BEGIN failed--compilation aborted.
> at@mash ~ $
>
> Вчера всё работало.
> Что бы это могло быть?
На rpm-4.0.4-alt51 работает.
На rpm-4.0.4-alt52 не работает.
Изменений между rpm-4.0.4-alt51 и rpm-4.0.4-alt52 очень много.
Никакого setpvn в коде rpm нет.
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* [devel] Re: RPM::Database
2005-10-19 9:05 ` Dmitry V. Levin
@ 2005-10-19 13:01 ` Alexey Tourbin
2005-10-19 13:29 ` Dmitry V. Levin
2005-10-19 13:56 ` Alexey Tourbin
0 siblings, 2 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 13:01 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 01:05:24PM +0400, Dmitry V. Levin wrote:
> On Wed, Oct 19, 2005 at 03:30:18AM +0400, Alexey Tourbin wrote:
> > at@mash ~ $ perl -MRPM::Database -e1
> > panic: sv_setpvn called with negative strlen at /usr/lib/perl5/i386-linux/DynaLoader.pm line 253.
> > Compilation failed in require at /usr/lib/perl5/vendor_perl/i386-linux/RPM/Database.pm line 35.
> > Compilation failed in require.
> > BEGIN failed--compilation aborted.
> > at@mash ~ $
> >
> > Вчера всё работало.
> > Что бы это могло быть?
>
> На rpm-4.0.4-alt51 работает.
> На rpm-4.0.4-alt52 не работает.
>
> Изменений между rpm-4.0.4-alt51 и rpm-4.0.4-alt52 очень много.
> Никакого setpvn в коде rpm нет.
После пересборки perl-RPM работает.
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* Re: [devel] Re: RPM::Database
2005-10-19 13:01 ` [devel] RPM::Database Alexey Tourbin
@ 2005-10-19 13:29 ` Dmitry V. Levin
2005-10-19 14:00 ` Alexey Tourbin
2005-10-19 13:56 ` Alexey Tourbin
1 sibling, 1 reply; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 13:29 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 05:01:36PM +0400, Alexey Tourbin wrote:
> On Wed, Oct 19, 2005 at 01:05:24PM +0400, Dmitry V. Levin wrote:
> > On Wed, Oct 19, 2005 at 03:30:18AM +0400, Alexey Tourbin wrote:
> > > at@mash ~ $ perl -MRPM::Database -e1
> > > panic: sv_setpvn called with negative strlen at /usr/lib/perl5/i386-linux/DynaLoader.pm line 253.
> > > Compilation failed in require at /usr/lib/perl5/vendor_perl/i386-linux/RPM/Database.pm line 35.
> > > Compilation failed in require.
> > > BEGIN failed--compilation aborted.
> > > at@mash ~ $
> > >
> > > Вчера всё работало.
> > > Что бы это могло быть?
> >
> > На rpm-4.0.4-alt51 работает.
> > На rpm-4.0.4-alt52 не работает.
> >
> > Изменений между rpm-4.0.4-alt51 и rpm-4.0.4-alt52 очень много.
> > Никакого setpvn в коде rpm нет.
>
> После пересборки perl-RPM работает.
А в чём причина?
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* [devel] Re: RPM::Database
2005-10-19 13:01 ` [devel] RPM::Database Alexey Tourbin
2005-10-19 13:29 ` Dmitry V. Levin
@ 2005-10-19 13:56 ` Alexey Tourbin
2005-10-19 14:06 ` Dmitry V. Levin
2005-10-19 14:18 ` Alexey Tourbin
1 sibling, 2 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 13:56 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 05:01:36PM +0400, Alexey Tourbin wrote:
> > Изменений между rpm-4.0.4-alt51 и rpm-4.0.4-alt52 очень много.
> > Никакого setpvn в коде rpm нет.
> После пересборки perl-RPM работает.
Сломался rpmTagTable.
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* [devel] Re: RPM::Database
2005-10-19 13:29 ` Dmitry V. Levin
@ 2005-10-19 14:00 ` Alexey Tourbin
0 siblings, 0 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 14:00 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 05:29:48PM +0400, Dmitry V. Levin wrote:
> > После пересборки perl-RPM работает.
> А в чём причина?
Пробую разобраться.
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* Re: [devel] Re: RPM::Database
2005-10-19 13:56 ` Alexey Tourbin
@ 2005-10-19 14:06 ` Dmitry V. Levin
2005-10-19 14:18 ` Alexey Tourbin
1 sibling, 0 replies; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 14:06 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 05:56:35PM +0400, Alexey Tourbin wrote:
> On Wed, Oct 19, 2005 at 05:01:36PM +0400, Alexey Tourbin wrote:
> > > Изменений между rpm-4.0.4-alt51 и rpm-4.0.4-alt52 очень много.
> > > Никакого setpvn в коде rpm нет.
> > После пересборки perl-RPM работает.
>
> Сломался rpmTagTable.
Он (массив переменных типа struct headerTagTableEntry_s) не мог измениться
настолько, чтобы повлиять на приложения.
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* [devel] Re: RPM::Database
2005-10-19 13:56 ` Alexey Tourbin
2005-10-19 14:06 ` Dmitry V. Levin
@ 2005-10-19 14:18 ` Alexey Tourbin
2005-10-19 15:50 ` Alexey Tourbin
1 sibling, 1 reply; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 14:18 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 05:56:35PM +0400, Alexey Tourbin wrote:
> > После пересборки perl-RPM работает.
> Сломался rpmTagTable.
$ cat test.c
#include <stdio.h>
#include <rpmlib.h>
int main()
{
const char *tag0 = rpmTagTable[0].name;
fprintf(stdout, "tag0: %s$\n", tag0);
return 0;
}
$ echo $ZSH_VERSION
4.3.0-dev-1
$ setopt EXTENDED_GLOB
$ sudo rpm -Uv --force --noscripts ~sisyphus/files/i586/RPMS/*rpm*-4.0.4-alt51.i586.rpm~*static*
Preparing packages for installation...
librpm-4.0.4-alt51
librpmbuild-4.0.4-alt51
librpm-devel-4.0.4-alt51
rpm-4.0.4-alt51
rpm-build-4.0.4-alt51
$ gcc -Wall -I/usr/include/rpm test.c -lrpm
$ ./a.out
tag0: RPMTAG_HEADERIMAGE$
$ sudo rpm -Uv --force --noscripts ~sisyphus/files/i586/RPMS/*rpm*-4.0.4-alt52.i586.rpm~*static*
Preparing packages for installation...
librpm-4.0.4-alt52
librpmbuild-4.0.4-alt52
librpm-devel-4.0.4-alt52
rpm-4.0.4-alt52
rpm-build-4.0.4-alt52
$ ./a.out
tag0: @=$
$ gcc -Wall -I/usr/include/rpm test.c -lrpm
$ ./a.out
tag0: RPMTAG_HEADERIMAGE$
$
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* [devel] Re: RPM::Database
2005-10-19 14:18 ` Alexey Tourbin
@ 2005-10-19 15:50 ` Alexey Tourbin
2005-10-19 17:17 ` Dmitry V. Levin
0 siblings, 1 reply; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 15:50 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 06:18:10PM +0400, Alexey Tourbin wrote:
> On Wed, Oct 19, 2005 at 05:56:35PM +0400, Alexey Tourbin wrote:
> > > После пересборки perl-RPM работает.
> > Сломался rpmTagTable.
> $ cat test.c
Ну?
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* Re: [devel] Re: RPM::Database
2005-10-19 15:50 ` Alexey Tourbin
@ 2005-10-19 17:17 ` Dmitry V. Levin
2005-10-19 17:23 ` Alexey Tourbin
` (2 more replies)
0 siblings, 3 replies; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 17:17 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 07:50:32PM +0400, Alexey Tourbin wrote:
> On Wed, Oct 19, 2005 at 06:18:10PM +0400, Alexey Tourbin wrote:
> > On Wed, Oct 19, 2005 at 05:56:35PM +0400, Alexey Tourbin wrote:
> > > > После пересборки perl-RPM работает.
> > > Сломался rpmTagTable.
> > $ cat test.c
>
> Ну?
Странно всё это:
$ cvs diff -u -r rpm-4_0_4-alt51 lib/rpmlib.h
[...]
--- lib/rpmlib.h 29 Feb 2004 14:14:02 -0000 1.6
+++ lib/rpmlib.h 17 Oct 2005 11:49:21 -0000
[...]
@@ -178,7 +196,7 @@
*/
/*@-redecl@*/
/*@observer@*/ /*@unchecked@*/
-extern const struct headerTagTableEntry_s rpmTagTable[];
+extern const struct headerTagTableEntry_s * rpmTagTable;
/*@=redecl@*/
/**
$ cat rttest.c
#include <stdio.h>
#include <rpmlib.h>
int main()
{
printf("rpmTagTableSize = %i\nrpmTagTable = %p\nrpmTagTable[0].name = %s (%p)\n",
rpmTagTableSize, rpmTagTable,
rpmTagTable[0].name, rpmTagTable[0].name);
return 0;
}
alt51$ gcc -Wall -Werror -I/usr/include/rpm rttest.c -lrpm -orttest-alt51
alt51$ ./rttest-alt51
rpmTagTableSize = 125
rpmTagTable = 0x8049740
rpmTagTable[0].name = RPMTAG_HEADERIMAGE (0x16b8e4)
alt52$ gcc -Wall -Werror -I/usr/include/rpm rttest.c -lrpm -orttest-alt52
alt52$ ./rttest-alt52
rpmTagTableSize = 125
rpmTagTable = 0x2b00a0
rpmTagTable[0].name = RPMTAG_HEADERIMAGE (0x2ae760)
alt51$ ./rttest-alt52
./rttest-alt52: Symbol `rpmTagTable' has different size in shared object, consider re-linking
rpmTagTableSize = 125
rpmTagTable = 0x16b8e4
Segmentation fault
alt52$ ./rttest-alt51
rpmTagTableSize = 125
rpmTagTable = 0x8049740
rpmTagTable[0].name = `Г* (0x2b00a0)
Тут он прав, полное Г*.
Ну что, придётся откатить этот backport?
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* [devel] Re: RPM::Database
2005-10-19 17:17 ` Dmitry V. Levin
@ 2005-10-19 17:23 ` Alexey Tourbin
2005-10-19 17:43 ` Dmitry V. Levin
2005-10-19 17:46 ` Alexey Tourbin
2 siblings, 0 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 17:23 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 09:17:25PM +0400, Dmitry V. Levin wrote:
> Тут он прав, полное Г*.
> Ну что, придётся откатить этот backport?
А в чем проблема-то? Оффсеты в этой структуре изменились?
offsetof(headerTagTableEntry_s, name) что говорит?
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* Re: [devel] Re: RPM::Database
2005-10-19 17:17 ` Dmitry V. Levin
2005-10-19 17:23 ` Alexey Tourbin
@ 2005-10-19 17:43 ` Dmitry V. Levin
2005-10-19 17:46 ` Alexey Tourbin
2 siblings, 0 replies; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 17:43 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 09:17:25PM +0400, Dmitry V. Levin wrote:
> On Wed, Oct 19, 2005 at 07:50:32PM +0400, Alexey Tourbin wrote:
> > On Wed, Oct 19, 2005 at 06:18:10PM +0400, Alexey Tourbin wrote:
> > > On Wed, Oct 19, 2005 at 05:56:35PM +0400, Alexey Tourbin wrote:
> > > > > После пересборки perl-RPM работает.
> > > > Сломался rpmTagTable.
> > > $ cat test.c
> >
> > Ну?
>
> Странно всё это:
Впрочем, ничего странного, надо откатывать.
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* [devel] Re: RPM::Database
2005-10-19 17:17 ` Dmitry V. Levin
2005-10-19 17:23 ` Alexey Tourbin
2005-10-19 17:43 ` Dmitry V. Levin
@ 2005-10-19 17:46 ` Alexey Tourbin
2005-10-19 18:00 ` Alexey Tourbin
2005-10-19 18:04 ` Dmitry V. Levin
2 siblings, 2 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 17:46 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 09:17:25PM +0400, Dmitry V. Levin wrote:
> alt51$ ./rttest-alt52
> ./rttest-alt52: Symbol `rpmTagTable' has different size in shared object, consider re-linking
> rpmTagTableSize = 125
> rpmTagTable = 0x16b8e4
> Segmentation fault
^^^
В этой ситуации вот что происходит:
#0 0x400d73ef in strlen () from /usr/lib/debug/libc.so.6
#1 0x400ae405 in _IO_vfprintf (s=0x4017c7e0,
format=0x544d5052 <Address 0x544d5052 out of bounds>, ap=0xbffff1dc "ы\204\004\bфї\027@@ў")
at vfprintf.c:1468
#2 0x400b496f in *__GI_fprintf (stream=0x544d5052,
format=0x544d5052 <Address 0x544d5052 out of bounds>) at fprintf.c:32
#3 0x080484d4 in main () at test.c:6
(gdb) frame 3
#3 0x080484d4 in main () at test.c:6
6 fprintf(stdout, "tag0: %s$\n", tag0);
(gdb) p tag0
$1 = 0x544d5052 <Address 0x544d5052 out of bounds>
(gdb) p rpmTagTable
$2 = (const struct headerTagTableEntry_s *) 0x4006e8e4
(gdb) p rpmTagTable[0]
$3 = {name = 0x544d5052 <Address 0x544d5052 out of bounds>, val = 1214203713}
Такое впечатление, что происходит неправильный dereferencing, то есть
rpmTagTable в качестве указателя уже смотрит непойми куда. Я озадачен. :)
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* [devel] Re: RPM::Database
2005-10-19 17:46 ` Alexey Tourbin
@ 2005-10-19 18:00 ` Alexey Tourbin
2005-10-19 18:04 ` Dmitry V. Levin
1 sibling, 0 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 18:00 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 09:46:29PM +0400, Alexey Tourbin wrote:
> > Segmentation fault
> ^^^
> В этой ситуации вот что происходит:
>
> #0 0x400d73ef in strlen () from /usr/lib/debug/libc.so.6
> #1 0x400ae405 in _IO_vfprintf (s=0x4017c7e0,
> format=0x544d5052 <Address 0x544d5052 out of bounds>, ap=0xbffff1dc "ы\204\004\bфї\027@@ў")
> at vfprintf.c:1468
> #2 0x400b496f in *__GI_fprintf (stream=0x544d5052,
> format=0x544d5052 <Address 0x544d5052 out of bounds>) at fprintf.c:32
> #3 0x080484d4 in main () at test.c:6
>
> (gdb) frame 3
> #3 0x080484d4 in main () at test.c:6
> 6 fprintf(stdout, "tag0: %s$\n", tag0);
> (gdb) p tag0
> $1 = 0x544d5052 <Address 0x544d5052 out of bounds>
> (gdb) p rpmTagTable
> $2 = (const struct headerTagTableEntry_s *) 0x4006e8e4
> (gdb) p rpmTagTable[0]
> $3 = {name = 0x544d5052 <Address 0x544d5052 out of bounds>, val = 1214203713}
>
> Такое впечатление, что происходит неправильный dereferencing, то есть
> rpmTagTable в качестве указателя уже смотрит непойми куда. Я озадачен. :)
Хе-хе! Вот что в этой ситуации присходит:
(gdb) p rpmTagTable
$10 = (const struct headerTagTableEntry_s *) 0x4006e8e4
(gdb) p (char*)rpmTagTable
$11 = 0x4006e8e4 "RPMTAG_HEADERIMAGE"
(gdb)
То есть один лишний dereferencing в этом случае почему-то происходит.
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* Re: [devel] Re: RPM::Database
2005-10-19 17:46 ` Alexey Tourbin
2005-10-19 18:00 ` Alexey Tourbin
@ 2005-10-19 18:04 ` Dmitry V. Levin
2005-10-19 19:07 ` Alexey Tourbin
1 sibling, 1 reply; 16+ messages in thread
From: Dmitry V. Levin @ 2005-10-19 18:04 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 09:46:29PM +0400, Alexey Tourbin wrote:
> Такое впечатление, что происходит неправильный dereferencing, то есть
> rpmTagTable в качестве указателя уже смотрит непойми куда. Я озадачен. :)
Это просто:
1. extern const struct headerTagTableEntry_s rpmTagTable[];
Что такое символ rpmTagTable для приложения?
Это адрес, по которому находится первый элемент массива.
2. extern const struct headerTagTableEntry_s * rpmTagTable;
Что такое символ rpmTagTable для приложения?
Это адрес, по которому находится адрес первого элемента массива.
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* [devel] Re: RPM::Database
2005-10-19 18:04 ` Dmitry V. Levin
@ 2005-10-19 19:07 ` Alexey Tourbin
0 siblings, 0 replies; 16+ messages in thread
From: Alexey Tourbin @ 2005-10-19 19:07 UTC (permalink / raw)
To: ALT Devel discussion list
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On Wed, Oct 19, 2005 at 10:04:00PM +0400, Dmitry V. Levin wrote:
> On Wed, Oct 19, 2005 at 09:46:29PM +0400, Alexey Tourbin wrote:
> > Такое впечатление, что происходит неправильный dereferencing, то есть
> > rpmTagTable в качестве указателя уже смотрит непойми куда. Я озадачен. :)
>
> Это просто:
>
> 1. extern const struct headerTagTableEntry_s rpmTagTable[];
> Что такое символ rpmTagTable для приложения?
> Это адрес, по которому находится первый элемент массива.
Да.
> 2. extern const struct headerTagTableEntry_s * rpmTagTable;
> Что такое символ rpmTagTable для приложения?
> Это адрес, по которому находится адрес первого элемента массива.
Нет. И тот и другой -- адрес первого элемента массива. Только первый
адрес константный, его нельзя менять (компилятор сразу может проставить
сам этот адрес в код, но не проставляет). А второй адрес можно менять,
компилятор обязан использовать косвенную адресацию. Впрочем, я не до
конца понимаю, что там делает компилятор. С точки зрения самого языка
Си эти две записи идентичны.
Нужно посмотреть, что там `gcc -S' показывает, но лень. Но может
посмотрю. :)
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2005-10-18 23:30 [devel] RPM::Database Alexey Tourbin
2005-10-19 9:05 ` Dmitry V. Levin
2005-10-19 13:01 ` [devel] RPM::Database Alexey Tourbin
2005-10-19 13:29 ` Dmitry V. Levin
2005-10-19 14:00 ` Alexey Tourbin
2005-10-19 13:56 ` Alexey Tourbin
2005-10-19 14:06 ` Dmitry V. Levin
2005-10-19 14:18 ` Alexey Tourbin
2005-10-19 15:50 ` Alexey Tourbin
2005-10-19 17:17 ` Dmitry V. Levin
2005-10-19 17:23 ` Alexey Tourbin
2005-10-19 17:43 ` Dmitry V. Levin
2005-10-19 17:46 ` Alexey Tourbin
2005-10-19 18:00 ` Alexey Tourbin
2005-10-19 18:04 ` Dmitry V. Levin
2005-10-19 19:07 ` Alexey Tourbin
ALT Linux Team development discussions
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