From: "Dmitry V. Levin" <ldv@altlinux.org> To: ALT Devel discussion list <devel@altlinux.ru> Subject: Re: [devel] glibc 2.3 - argp_parse broken?? Date: Wed, 19 May 2004 20:42:10 +0400 Message-ID: <20040519164210.GA26387@nomad.office.altlinux.org> (raw) In-Reply-To: <20040519160331.GB17274@mailhub.gu.net> [-- Attachment #1.1: Type: text/plain, Size: 1470 bytes --] On Wed, May 19, 2004 at 07:03:31PM +0300, Victor Forsyuk wrote: > On Wed, May 19, 2004 at 07:37:52PM +0400, Dmitry V. Levin wrote: > > On Wed, May 19, 2004 at 06:31:05PM +0300, Victor Forsyuk wrote: > > > Или subj, или я чего-то не понимаю. Замечена поломка опции "-o" в ccze > > > (ccze-0.2.1-alt2). Без указания этой опции программа работает. Например: > > > > > > > tail -f /var/log/exim/main.log|ccze -A -p exim > > > > > > Как только указываем что-либо в этой опции, имеем сегфолт: > > > > > > > tail -f /var/log/exim/main.log|ccze -A -p exim -o nolookups > > > Segmentation fault > > > > ccze -A -p exim -o nolookups </dev/null тоже падает. > > Да, я и так проверял. До обработки данных дело вообще не доходит, > сегфолт внутри argp_parse. Нет, Program received signal SIGSEGV, Segmentation fault. 0x0804a0dd in parse_opt (key=111, arg=0xbffffa07 "nolookups", state=0xbffff7b4) at ccze.c:277 > > > Bug, изменения в функции с обратной несовместимостью, проявившаяся > > > ошибка в программе? Подскажите, кто с argp_parse знаком ближе > > > (я никогда ее не использовал), у меня разбираться, к сожалению, > > > практически нет времени. > > > > Я посмотрю. > > Повесить баг (вроде как bugzilla поднялась уже) или не нужно? Это фатальная опечатка в программе, плюс необратимое изменение в glibc от 8 марта этого года, собственно и делающее эту опечатку фатальной. Патч на ccze и текст изменения прилагаются. -- ldv [-- Attachment #1.2: ccze-0.2.1-alt-argp.patch --] [-- Type: text/plain, Size: 923 bytes --] diff -uprk.orig ccze-0.2.1.orig/src/ccze.c ccze-0.2.1/src/ccze.c --- ccze-0.2.1.orig/src/ccze.c 2003-05-13 22:09:30 +0400 +++ ccze-0.2.1/src/ccze.c 2004-05-19 20:21:02 +0400 @@ -209,7 +209,7 @@ parse_opt (int key, char *arg, struct ar } break; case 'a': - plugin = strtok (optarg, "="); + plugin = strtok (arg, "="); value = strtok (NULL, "\n"); ccze_plugin_argv_set (plugin, value); break; @@ -249,7 +249,7 @@ parse_opt (int key, char *arg, struct ar ccze_config.remfac = 1; break; case 'm': - subopts = optarg; + subopts = arg; while (*subopts != '\0') { switch (getsubopt (&subopts, m_subopts, &value)) @@ -273,7 +273,7 @@ parse_opt (int key, char *arg, struct ar } break; case 'o': - subopts = optarg; + subopts = arg; while (*subopts != '\0') { switch (getsubopt (&subopts, o_subopts, &value)) [-- Attachment #1.3: optarg_change --] [-- Type: text/plain, Size: 2522 bytes --] 2004-03-08 Marcus Brinkmann <marcus@gnu.org> * posix/getopt.h (_getopt_internal): Move to ... * posix/getopt_int.h: ... here. New file. * include/getopt_int.h: New file. * include/getopt.h: Remove libc_hidden_proto for getopt_long and getopt_long_only. * posix/getopt1.c: Include "getopt_int.h". Remove libc_hidden_def for getopt_long and getopt_long_only. (_getopt_long_r, _getopt_long_only_r): New functions. * posix/getopt.c: Include "getopt_int.h". (__getopt_initialized): Variable removed. (nextchar, ordering, posixly_correct, first_nonopt, last_nonopt): Static variables removed. (nonoption_flags_max_len, nonoption_flags_len) [_LIBC && USE_NONOPTION_FLAGS]: Static variables removed. (getopt_data): New static variable. (SWAP_FLAGS): Use d->__nonoption_flags_len instead nonoption_flags_len. (exchange): Add new argument D of type struct getopt_data *. Replace optind with d->optind, optarg with d->optarg, opterr with d->opterr, optopt with d->optopt, nextchar with d->__nextchar, first_nonopt with d->__first_nonopt, last_nonopt with d->__last_nonopt, d->ordering with d->__ordering, d->posixly_correct with d->__posixly_correct (which is now an int instead a string, so fix users), nonoption_flags_len with d->__nonoption_flags_len, nonoption_flags_max_len with d->__nonoption_flags_max_len. (_getopt_initialize): Likewise. (_getopt_internal): Rename to ... (_getopt_internal_r): ... this. Also add new argument D of type struct getopt_data * and use of members of D rather than global or static variables as described for exchange() above. Add new argument to invocations of _getopt_initialize and exchange. (_getopt_internal): Reimplement in terms of _getopt_internal_r. * argp/argp-parse.c: Include <getopt_int.h>. [_LIBC]: Do not include <bits/libc-lock.h>. [!_LIBC && HAVE_CTHREADS_H]: Do not include <cthreads.h>. [!_LIBC] (_argp_hang): Make static. (getopt_lock, LOCK_GETOPT, UNLOCK_GETOPT): Remove. (_argp_unlock_xxx): Remove. (parser_init): Do not use LOCK_GETOPT. (parser_finalize): Do not use UNLOCK_GETOPT. (struct parser): New member OPT_DATA. (parser_init): Initialize parser->opt_data. Use parser->opt_data.opterr instead of opterr. (parser_parse_opt): Use parser->opt_data.optarg instead optarg. (parser_parse_next): Likewise. Use parser->opt_data.optind instead optind. Use parser->opt_data.optopt instead of optopt. Call _getopt_long_only_r and _getopt_long_r instead of getopt_long_only and getopt_long, and pass the extra argument. [-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
prev parent reply other threads:[~2004-05-19 16:42 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2004-05-19 15:31 Victor Forsyuk 2004-05-19 15:37 ` Dmitry V. Levin 2004-05-19 16:03 ` Victor Forsyuk 2004-05-19 16:42 ` Dmitry V. Levin [this message]
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