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bug#9318: 23.3.50; The first call of encode-coding-region() returns wron
From: |
Kazuhiro Ito |
Subject: |
bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result |
Date: |
Wed, 24 Aug 2011 18:37:24 +0900 |
User-agent: |
Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.6 (Maruoka) FLIM/1.14.9 (Gojō) APEL/10.8 EasyPG/1.0.0 Emacs/23.3.50 (i386-mingw-nt6.1.7601) MULE/6.0 (HANACHIRUSATO) |
> I built Emacs 23.3 with "-O0 -g" option on NetBSD 5.1 (amd64), and
> started with below commad (via SSH).
>
> gdb --args emacs -Q --no-splash
>
> Next, inputtedand below code and evaluated with C-x C-e.
>
> (progn
> (goto-char (point-min))
> (insert #x80)
> (insert (make-string 16 ?A))
> (encode-coding-region 1 18 'ctext-unix))
>
> backtrace is below. Please let me know if you need more information.
>
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000557419 in mark_object (arg=4702111234474983745) at alloc.c:5473
> 5473 if (STRING_MARKED_P (ptr))
I think relocation of buffer may cause the problem.
The comment for CODING_DECODE_CHAR macro in coding.c says as below.
> /* This wrapper macro is used to preserve validity of pointers into
> buffer text across calls to decode_char, which could cause
> relocation of buffers if it loads a charset map, because loading a
> charset map allocates large structures. */
encode_coding_iso_2022() uses ENCODE_ISO_CHARACTER macro, which uses
ENCODE_CHAR macro. ENCODE_CHAR macro calls encode_char() and it may
load a charset map. If this is the cause of the problem,
encode_coding_emace_mule() has the same problem.
--
Kazuhiro Ito
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result on on Windows, Kazuhiro Ito, 2011/08/18
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result on on Windows, Andreas Schwab, 2011/08/18
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Kazuhiro Ito, 2011/08/19
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Chong Yidong, 2011/08/20
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Andreas Schwab, 2011/08/24
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Kazuhiro Ito, 2011/08/25
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Kazuhiro Ito, 2011/08/26
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Kazuhiro Ito, 2011/08/27
- bug#9318: 23.3.50; The first call of encode-coding-region() returns wrong result, Kazuhiro Ito, 2011/08/30