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(decode_coding_utf_16): Reduce charbuf_end for the

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worst case.
(decode_coding_emacs_mule, decode_coding_iso_2022)
(decode_coding_sjis, decode_coding_big5, decode_coding_charset):
Likewise.
This commit is contained in:
Kenichi Handa 2009-04-21 06:36:21 +00:00
parent 0b4ff5dfa0
commit df80c7f014
2 changed files with 26 additions and 7 deletions
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25
src/coding.c
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@ -1703,7 +1703,8 @@ decode_coding_utf_16 (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
int *charbuf_end = coding->charbuf + coding->charbuf_size;
/* We may produces at most 3 chars in one loop. */
int *charbuf_end = coding->charbuf + coding->charbuf_size - 2;
int consumed_chars = 0, consumed_chars_base = 0;
int multibytep = coding->src_multibyte;
enum utf_bom_type bom = CODING_UTF_16_BOM (coding);
@ -1749,7 +1750,7 @@ decode_coding_utf_16 (coding)
src_base = src;
consumed_chars_base = consumed_chars;
if (charbuf + 2 >= charbuf_end)
if (charbuf >= charbuf_end)
{
if (byte_after_cr1 >= 0)
src_base -= 2;
@ -2442,8 +2443,10 @@ decode_coding_emacs_mule (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
/* We may produce two annocations (charset and composition) in one
loop and one more charset annocation at the end. */
int *charbuf_end
= coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH;
= coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 3);
int consumed_chars = 0, consumed_chars_base;
int multibytep = coding->src_multibyte;
Lisp_Object attrs, charset_list;
@ -3558,8 +3561,10 @@ decode_coding_iso_2022 (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
/* We may produce two annocations (charset and composition) in one
loop and one more charset annocation at the end. */
int *charbuf_end
= coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH;
= coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 3);
int consumed_chars = 0, consumed_chars_base;
int multibytep = coding->src_multibyte;
/* Charsets invoked to graphic plane 0 and 1 respectively. */
@ -4758,8 +4763,10 @@ decode_coding_sjis (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
/* We may produce one charset annocation in one loop and one more at
the end. */
int *charbuf_end
= coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH;
= coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2);
int consumed_chars = 0, consumed_chars_base;
int multibytep = coding->src_multibyte;
struct charset *charset_roman, *charset_kanji, *charset_kana;
@ -4875,8 +4882,10 @@ decode_coding_big5 (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
/* We may produce one charset annocation in one loop and one more at
the end. */
int *charbuf_end
= coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH;
= coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2);
int consumed_chars = 0, consumed_chars_base;
int multibytep = coding->src_multibyte;
struct charset *charset_roman, *charset_big5;
@ -5549,8 +5558,10 @@ decode_coding_charset (coding)
const unsigned char *src_end = coding->source + coding->src_bytes;
const unsigned char *src_base;
int *charbuf = coding->charbuf + coding->charbuf_used;
/* We may produce one charset annocation in one loop and one more at
the end. */
int *charbuf_end
= coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH;
= coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2);
int consumed_chars = 0, consumed_chars_base;
int multibytep = coding->src_multibyte;
Lisp_Object attrs, charset_list, valids;