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| author | Kenichi Handa <handa@gnu.org> | 2014-10-08 10:30:57 +0300 |
|---|---|---|
| committer | Eli Zaretskii <eliz@gnu.org> | 2014-10-08 10:30:57 +0300 |
| commit | a7044030f39a7351507727421308c56d7771bebf (patch) | |
| tree | b1c77c6b78f462692111dc20981da1ae9e9ff984 /src/coding.c | |
| parent | e76955cbb521aee4af70a8c93d9f1be5f1d3f4a6 (diff) | |
| download | emacs-a7044030f39a7351507727421308c56d7771bebf.tar.gz | |
Fix bug #18610 with crashes when visiting files with ESC and 8-bit bytes.
src/coding.c (detect_coding_iso_2022): Set coding->rejected
correctly when an invalid escape sequence is found.
Backported from trunk.
Diffstat (limited to 'src/coding.c')
| -rw-r--r-- | src/coding.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/src/coding.c b/src/coding.c index 31303e2ba42..b0a9f6ef4cb 100644 --- a/src/coding.c +++ b/src/coding.c @@ -3078,8 +3078,13 @@ detect_coding_iso_2022 (struct coding_system *coding, ONE_MORE_BYTE (c1); if (c1 < ' ' || c1 >= 0x80 || (id = iso_charset_table[0][c >= ','][c1]) < 0) - /* Invalid designation sequence. Just ignore. */ - break; + { + /* Invalid designation sequence. Just ignore. */ + if (c1 >= 0x80) + rejected |= (CATEGORY_MASK_ISO_7BIT + | CATEGORY_MASK_ISO_7_ELSE); + break; + } } else if (c == '$') { @@ -3093,16 +3098,29 @@ detect_coding_iso_2022 (struct coding_system *coding, ONE_MORE_BYTE (c1); if (c1 < ' ' || c1 >= 0x80 || (id = iso_charset_table[1][c >= ','][c1]) < 0) - /* Invalid designation sequence. Just ignore. */ - break; + { + /* Invalid designation sequence. Just ignore. */ + if (c1 >= 0x80) + rejected |= (CATEGORY_MASK_ISO_7BIT + | CATEGORY_MASK_ISO_7_ELSE); + break; + } } else - /* Invalid designation sequence. Just ignore it. */ - break; + { + /* Invalid designation sequence. Just ignore it. */ + if (c >= 0x80) + rejected |= (CATEGORY_MASK_ISO_7BIT + | CATEGORY_MASK_ISO_7_ELSE); + break; + } } else { /* Invalid escape sequence. Just ignore it. */ + if (c >= 0x80) + rejected |= (CATEGORY_MASK_ISO_7BIT + | CATEGORY_MASK_ISO_7_ELSE); break; } @@ -3153,7 +3171,7 @@ detect_coding_iso_2022 (struct coding_system *coding, if (inhibit_iso_escape_detection) break; single_shifting = 0; - rejected |= CATEGORY_MASK_ISO_7BIT; + rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) & CODING_ISO_FLAG_SINGLE_SHIFT) { @@ -3180,9 +3198,9 @@ detect_coding_iso_2022 (struct coding_system *coding, single_shifting = 0; break; } + rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; if (c >= 0xA0) { - rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; found |= CATEGORY_MASK_ISO_8_1; /* Check the length of succeeding codes of the range 0xA0..0FF. If the byte length is even, we include |