[PHP-dev 568] Re: Fwd: Re: [PHP-DEV] mbstring and 4.3.0
Rui Hirokawa
php-dev@php.gr.jp
Wed, 13 Nov 2002 07:21:48 +0900
廣川です。
関数オーバーローディングは評判悪いですね(^_^)
初期化されていない状況が生じているのだと思いますが、
調べてみます。
On Wed, 13 Nov 2002 06:19:02 +0900
Moriyoshi Koizumi <moriyoshi@at.wakwak.com> wrote:
Moriyoshi> 小泉です。
Moriyoshi>
Moriyoshi> 悪いニュースが三連続になってしまいましたが、
Moriyoshi> 念のため転送しておきます。関数オーバーロードで segfault という
Moriyoshi> つっこみなんですが…。
Moriyoshi>
Moriyoshi> 現在この問題が発生した原因を究明している余裕がありません。
Moriyoshi> どなたか見ていただけないでしょうか？
Moriyoshi>
Moriyoshi> # 問題発生原因が本当にオーバーロードなのか、それとも、
Moriyoshi> # オーバーロードによって露呈したEGにまつわる別の不具合なのか。
Moriyoshi> # これだとバックトレースがまったく役に立ちませんね。
Moriyoshi>
Moriyoshi>
Moriyoshi> "Ilia A." <ilia@prohost.org> wrote:
Moriyoshi> >
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Moriyoshi> > From: "Ilia A." <ilia@prohost.org>
Moriyoshi> > Reply-To: ilia@prohost.org
Moriyoshi> > To: Andrei Zmievski <andrei@gravitonic.com>,
Moriyoshi> > PHP Developers <php-dev@lists.php.net>
Moriyoshi> > Date: Tue, 12 Nov 2002 15:07:44 -0500
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Moriyoshi> > Subject: Re: [PHP-DEV] mbstring and 4.3.0
Moriyoshi> > X-UIDL: e309e329402b182e8f1d662b6653457c
Moriyoshi> >
Moriyoshi> > On November 7, 2002 10:04 am, Andrei Zmievski wrote:
Moriyoshi> > > At the PHP Conference in Germany several of us have discussed the
Moriyoshi> > > current state of mbstring and there was a proposal to not have it
Moriyoshi> > > enabled by default for 4.3.0 release. It seems that the extension
Moriyoshi> > > attempts to do "magic" stuff by overloading functions in the executor
Moriyoshi> > > globals and, as Thies said, that could be dangerous. Also, doesn't it
Moriyoshi> > > affect run-tests.php script currently?
Moriyoshi> > >
Moriyoshi> >
Moriyoshi> > On the note of overloading done by mbstring, it appears this behavior is not
Moriyoshi> > entirely stable. On at least one test system (Sun OS 5.9) it causes crashes
Moriyoshi> > and overruns by using the test script in the test suite.
Moriyoshi> > Ex:
Moriyoshi> > sapi/cli/php -d "mbstring.func_overload=1" -r ''
Moriyoshi> > Unknown(0) : Fatal error - (null)() [http://www.php.net/ref.mbstring]:
Moriyoshi> > mbstring couldn't find function mail.
Moriyoshi> > Could not startup.
Moriyoshi> > [Tue Nov 12 21:01:33 2002] Script: '-'
Moriyoshi> > ---------------------------------------
Moriyoshi> > php4/Zend/zend_execute.h(44) : Block 0x001FB640 status:
Moriyoshi> > Beginning: Overrun (magic=0x001FE7F8, expected=0x7312F8DC)
Moriyoshi> > End: Unknown
Moriyoshi> > ---------------------------------------
Moriyoshi> >
Moriyoshi> > The test script itself (ext/mbstring/tests/overload.phpt) causes a
Moriyoshi> > segmentation fault. Here is a back trace:
Moriyoshi> > #0 0x001528f8 in shutdown_memory_manager (silent=1, clean_cache=1) at
Moriyoshi> > php4/Zend/zend_alloc.c:461
Moriyoshi> > #1 0x0011d944 in php_module_shutdown () at php4/main/main.c:1219
Moriyoshi> > #2 0x0018d8d0 in main (argc=39, argv=0xffbffa74) at
Moriyoshi> > php4/sapi/cli/php_cli.c:761
Moriyoshi> >
Moriyoshi> > Ilia
Moriyoshi> >
Moriyoshi> > --
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Moriyoshi> >
Moriyoshi>
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--
Rui Hirokawa <rui_hirokawa@ybb.ne.jp>