Bill Sommerfeld 4f4860c9b0 regex: mixed sets are misidentified as singletons ... Fix "singleton" function used by regcomp() to turn character set matches into exact character matches if a character set has exactly one element. The underlying cset representation is complex; most critically it records"small" characters (codepoint less than either 128 or 256 depending on locale) in a bit vector, and "wide" characters in a secondary array. Unfortunately the "singleton" function uses to identify singleton sets treated a cset as a singleton if either the "small" or the "wide" sets had exactly one element (it would then ignore the other set). The easiest way to demonstrate this bug: $ export LANG=C.UTF-8 $ echo 'a' | grep '[abà]' It should match (and print "a") but instead it doesn't match because the single accented character in the set is misinterpreted as a singleton. PR: 281710 Reviewed by: kevans, yuripv Obtained from: illumos (cherry picked from commit 8f7ed58a15)		2024-09-25 15:42:25 -05:00
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grot	libc: Purge unneeded cdefs.h	2023-11-26 21:20:09 -07:00
cname.h	Remove $FreeBSD$: one-line .h pattern	2023-08-16 11:54:23 -06:00
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engine.c	libc: Purge unneeded cdefs.h	2023-11-26 21:20:09 -07:00
Makefile.inc	Remove $FreeBSD$: one-line sh pattern	2023-08-16 11:55:03 -06:00
re_format.7	Remove $FreeBSD$: one-line nroff pattern	2023-08-16 11:55:15 -06:00
regcomp.c	regex: mixed sets are misidentified as singletons	2024-09-25 15:42:25 -05:00
regerror.c	libc: Purge unneeded cdefs.h	2023-11-26 21:20:09 -07:00
regex.3	Remove $FreeBSD$: one-line nroff pattern	2023-08-16 11:55:15 -06:00
regex2.h	Remove $FreeBSD$: one-line .h pattern	2023-08-16 11:54:23 -06:00
regexec.c	libc: Purge unneeded cdefs.h	2023-11-26 21:20:09 -07:00
regfree.c	libc: Purge unneeded cdefs.h	2023-11-26 21:20:09 -07:00
Symbol.map	libc: Remove empty comments in Symbol.map	2023-12-13 22:08:13 +00:00
utils.h	Remove $FreeBSD$: one-line .h pattern	2023-08-16 11:54:23 -06:00
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