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Original patch from: gentoo/src/patchsets/glibc/2.9/0052_all_glibc-2.9-regex-BZ9697.patch
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-= BEGIN original header =-
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http://sourceware.org/ml/libc-alpha/2009-01/msg00005.html
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From ea8ca0dfcbf2721bcf2c08ce3c01d5764b827572 Mon Sep 17 00:00:00 2001
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From: Ulrich Drepper <drepper@redhat.com>
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Date: Thu, 8 Jan 2009 00:42:28 +0000
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Subject: [PATCH] (re_compile_fastmap_iter): Rewrite COMPLEX_BRACKET handling.
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-= END original header =-
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diff -durN glibc-2_9.orig/posix/regcomp.c glibc-2_9/posix/regcomp.c
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--- glibc-2_9.orig/posix/regcomp.c 2008-05-15 05:07:21.000000000 +0200
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+++ glibc-2_9/posix/regcomp.c 2009-02-02 22:00:41.000000000 +0100
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@@ -350,47 +350,67 @@
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#ifdef RE_ENABLE_I18N
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else if (type == COMPLEX_BRACKET)
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{
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- int i;
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re_charset_t *cset = dfa->nodes[node].opr.mbcset;
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- if (cset->non_match || cset->ncoll_syms || cset->nequiv_classes
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- || cset->nranges || cset->nchar_classes)
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- {
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+ int i;
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+
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# ifdef _LIBC
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- if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0)
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+ /* See if we have to try all bytes which start multiple collation
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+ elements.
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+ e.g. In da_DK, we want to catch 'a' since "aa" is a valid
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+ collation element, and don't catch 'b' since 'b' is
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+ the only collation element which starts from 'b' (and
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+ it is caught by SIMPLE_BRACKET). */
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+ if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0
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+ && (cset->ncoll_syms || cset->nranges))
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{
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- /* In this case we want to catch the bytes which are
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- the first byte of any collation elements.
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- e.g. In da_DK, we want to catch 'a' since "aa"
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- is a valid collation element, and don't catch
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- 'b' since 'b' is the only collation element
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- which starts from 'b'. */
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const int32_t *table = (const int32_t *)
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_NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
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for (i = 0; i < SBC_MAX; ++i)
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if (table[i] < 0)
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re_set_fastmap (fastmap, icase, i);
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}
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-# else
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- if (dfa->mb_cur_max > 1)
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- for (i = 0; i < SBC_MAX; ++i)
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- if (__btowc (i) == WEOF)
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- re_set_fastmap (fastmap, icase, i);
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-# endif /* not _LIBC */
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- }
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- for (i = 0; i < cset->nmbchars; ++i)
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+# endif /* _LIBC */
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+
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+ /* See if we have to start the match at all multibyte characters,
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+ i.e. where we would not find an invalid sequence. This only
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+ applies to multibyte character sets; for single byte character
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+ sets, the SIMPLE_BRACKET again suffices. */
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+ if (dfa->mb_cur_max > 1
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+ && (cset->nchar_classes || cset->non_match
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+# ifdef _LIBC
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+ || cset->nequiv_classes
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+# endif /* _LIBC */
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+ ))
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{
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- char buf[256];
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- mbstate_t state;
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- memset (&state, '\0', sizeof (state));
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- if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
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- re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
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- if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
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+ unsigned char c = 0;
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+ do
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{
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- if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
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- != (size_t) -1)
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- re_set_fastmap (fastmap, 0, *(unsigned char *) buf);
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+ mbstate_t mbs;
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+ memset (&mbs, 0, sizeof (mbs));
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+ if (__mbrtowc (NULL, (char *) &c, 1, &mbs) == (size_t) -2)
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+ re_set_fastmap (fastmap, false, (int) c);
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}
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+ while (++c != 0);
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}
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+
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+ else
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+ {
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+ /* ... Else catch all bytes which can start the mbchars. */
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+ for (i = 0; i < cset->nmbchars; ++i)
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+ {
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+ char buf[256];
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+ mbstate_t state;
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+ memset (&state, '\0', sizeof (state));
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+ if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
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+ re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
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+ if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
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+ {
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+ if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
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+ != (size_t) -1)
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+ re_set_fastmap (fastmap, false, *(unsigned char *) buf);
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+ }
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+ }
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+ }
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}
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#endif /* RE_ENABLE_I18N */
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else if (type == OP_PERIOD
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