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regex: Gnulib unibyte RRI uses bytes not chars

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Adjust the non-glibc code to agree with what Gawk needs for
rational range interpretation (RRI) for regular expression ranges.
In unibyte locales, Gawk wants ranges to use the underlying byte
rather than the character code point.  This change does not affect
glibc proper.
* posix/regcomp.c (parse_byte) [!LIBC && RE_ENABLE_I18N]:
In unibyte locales, use the byte value rather than
running it through btowc.
This commit is contained in:
Paul Eggert 2018-08-10 14:19:05 -07:00
parent 2ce7ba7d15
commit c77bf91b43
2 changed files with 16 additions and 5 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
2018-08-10 Paul Eggert <eggert@cs.ucla.edu>
regex: Gnulib unibyte RRI uses bytes not chars
Adjust the non-glibc code to agree with what Gawk needs for
rational range interpretation (RRI) for regular expression ranges.
In unibyte locales, Gawk wants ranges to use the underlying byte
rather than the character code point. This change does not affect
glibc proper.
* posix/regcomp.c (parse_byte) [!LIBC && RE_ENABLE_I18N]:
In unibyte locales, use the byte value rather than
running it through btowc.
2018-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/generic/math-tests-snan.h: New file.

9
posix/regcomp.c
View File

@ -2684,15 +2684,14 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
# ifdef RE_ENABLE_I18N
/* Convert the byte B to the corresponding wide character. In a
unibyte locale, treat B as itself if it is an encoding error.
In a multibyte locale, return WEOF if B is an encoding error. */
unibyte locale, treat B as itself. In a multibyte locale, return
WEOF if B is an encoding error. */
static wint_t
parse_byte (unsigned char b, re_charset_t *mbcset)
{
wint_t wc = __btowc (b);
return wc == WEOF && !mbcset ? b : wc;
return mbcset == NULL ? b : __btowc (b);
}
#endif
# endif
/* Local function for parse_bracket_exp only used in case of NOT _LIBC.
Build the range expression which starts from START_ELEM, and ends