Alex Dowad 7ad406a4b9 Fix crash in mb_substr with MacJapanese encoding ...

Thanks to the GitHub user vi3tL0u1s (Viet Hoang Luu) for reporting this issue.

The MacJapanese legacy text encoding has a very unusual property; it is possible for a string
to encode more codepoints than it has bytes. In some corner cases, this resulted in a situation
where the implementation code for mb_substr() would allocate a buffer of size -1. As you can
probably imagine, that doesn't end well.

Fixes GH-20832.

2026-01-18 20:07:12 +09:00

..

libmbfl

Remove unused conversion code from mbstring

2026-01-13 11:43:44 +09:00

tests

Fix crash in mb_substr with MacJapanese encoding

2026-01-18 20:07:12 +09:00

ucgendat

ext/mbstring: update UCD parser to accept characters with multiple properties

2024-06-29 17:24:52 +02:00

common_codepoints.txt

Improve mb_detect_encoding accuracy for text containing vowels with macrons

2023-08-25 12:09:55 +02:00

config.m4

Autotools: Move extension setup to main check (#15797)

2024-09-08 08:31:21 +02:00

config.w32

Update ext/mbstring and ext/snmp dependencies (#15469)

2024-08-17 21:11:28 +02:00

CREDITS

…

gen_rare_cp_bitvec.php

Mark globals as const (#10303)

2023-01-23 13:46:58 +00:00

mb_gpc.c

Drop useless cast

2025-05-21 19:54:09 +02:00

mb_gpc.h

Remove unused 'to_language' and 'from_language' struct fields

2022-08-16 16:43:26 +02:00

mbstring_arginfo.h

Generated arginfo header files: combine preprocessor conditional blocks (#15736)

2024-09-04 13:04:22 +02:00

mbstring.c

Fix crash in mb_substr with MacJapanese encoding

2026-01-18 20:07:12 +09:00

mbstring.h

Take order of candidate encodings into account when guessing text encoding

2023-05-16 07:01:07 -07:00

mbstring.stub.php

Fix GH-13815: mb_trim() inaccurate $characters default value (#13820)

2024-04-24 09:07:55 +02:00

php_mbregex.c

Merge branch 'PHP-8.4'

2025-06-22 13:09:09 +02:00

php_mbregex.h

Declare ext/mbstring constants in stubs (#8798)

2022-06-23 17:34:08 +02:00

php_onig_compat.h

Fix GH-20491: SLES15 compile error with mbstring oniguruma

2025-11-20 19:17:17 +01:00

php_unicode.c

Use fast path in more cases when doing case folding with mb_convert_case

2026-01-10 13:10:59 +09:00

php_unicode.h

Speed boost for mb_stripos (when not using UTF-8)

2022-12-18 15:31:20 +02:00

rare_cp_bitvec.h

Improve mb_detect_encoding accuracy for text containing vowels with macrons

2023-08-25 12:09:55 +02:00

unicode_data.h

ext/mbstring: Update to Unicode 17.0 (#19796)

2025-09-13 08:07:51 +09:00