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glibc/posix/bug-regex20.c
Siddhesh Poyarekar 30891f35fa Remove "Contributed by" lines 
We stopped adding "Contributed by" or similar lines in sources in 2012
in favour of git logs and keeping the Contributors section of the
glibc manual up to date.  Removing these lines makes the license
header a bit more consistent across files and also removes the
possibility of error in attribution when license blocks or files are
copied across since the contributed-by lines don't actually reflect
reality in those cases.

Move all "Contributed by" and similar lines (Written by, Test by,
etc.) into a new file CONTRIBUTED-BY to retain record of these
contributions.  These contributors are also mentioned in
manual/contrib.texi, so we just maintain this additional record as a
courtesy to the earlier developers.

The following scripts were used to filter a list of files to edit in
place and to clean up the CONTRIBUTED-BY file respectively.  These
were not added to the glibc sources because they're not expected to be
of any use in future given that this is a one time task:

https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc
https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02

Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2021-09-03 22:06:44 +05:30

286 lines
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/* Test for UTF-8 regular expression optimizations.
Copyright (C) 2003-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <mcheck.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>
#define RE_NO_INTERNAL_PROTOTYPES 1
#include "regex_internal.h"
#define BRE RE_SYNTAX_POSIX_BASIC
#define ERE RE_SYNTAX_POSIX_EXTENDED
static struct
{
int syntax;
const char *pattern;
const char *string;
int res, optimize;
} tests[] = {
/* \xc3\x84 LATIN CAPITAL LETTER A WITH DIAERESIS
\xc3\x96 LATIN CAPITAL LETTER O WITH DIAERESIS
\xc3\xa4 LATIN SMALL LETTER A WITH DIAERESIS
\xc3\xb6 LATIN SMALL LETTER O WITH DIAERESIS
\xe2\x80\x94 EM DASH */
/* Should be optimized. */
{BRE, "foo", "b\xc3\xa4rfoob\xc3\xa4z", 4, 1},
{BRE, "b\xc3\xa4z", "b\xc3\xa4rfoob\xc3\xa4z", 7, 1},
{BRE, "b\xc3\xa4*z", "b\xc3\xa4rfoob\xc3\xa4z", 7, 1},
{BRE, "b\xc3\xa4*z", "b\xc3\xa4rfoobz", 7, 1},
{BRE, "b\xc3\xa4\\+z", "b\xc3\xa4rfoob\xc3\xa4\xc3\xa4z", 7, 1},
{BRE, "b\xc3\xa4\\?z", "b\xc3\xa4rfoob\xc3\xa4z", 7, 1},
{BRE, "b\xc3\xa4\\{1,2\\}z", "b\xc3\xa4rfoob\xc3\xa4z", 7, 1},
{BRE, "^x\\|xy*z$", "\xc3\xb6xyyz", 2, 1},
{BRE, "^x\\\\y\\{6\\}z\\+", "x\\yyyyyyzz\xc3\xb6", 0, 1},
{BRE, "^x\\\\y\\{2,36\\}z\\+", "x\\yzz\xc3\xb6", -1, 1},
{BRE, "^x\\\\y\\{,3\\}z\\+", "x\\yyyzz\xc3\xb6", 0, 1},
{BRE, "^x\\|x\xc3\xa4*z$", "\xc3\xb6x\xc3\xa4\xc3\xa4z", 2, 1},
{BRE, "^x\\\\\xc3\x84\\{6\\}z\\+",
"x\\\xc3\x84\xc3\x84\xc3\x84\xc3\x84\xc3\x84\xc3\x84zz\xc3\xb6", 0, 1},
{BRE, "^x\\\\\xc3\x84\\{2,36\\}z\\+", "x\\\xc3\x84zz\xc3\xb6", -1, 1},
{BRE, "^x\\\\\xc3\x84\\{,3\\}z\\+",
"x\\\xc3\x84\xc3\x84\xc3\x84zz\xc3\xb6", 0, 1},
{BRE, "x[C]y", "axCy", 1, 1},
{BRE, "x[ABC]y", "axCy", 1, 1},
{BRE, "\\`x\\|z\\'", "x\xe2\x80\x94", 0, 1},
{BRE, "\\(xy\\)z\\1a\\1", "\xe2\x80\x94xyzxyaxy\xc3\x84", 3, 1},
{BRE, "xy\\?z", "\xc3\x84xz\xc3\xb6", 2, 1},
{BRE, "\\`\xc3\x84\\|z\\'", "\xc3\x84\xe2\x80\x94", 0, 1},
{BRE, "\\(x\xc3\x84\\)z\\1\x61\\1",
"\xe2\x80\x94x\xc3\x84zx\xc3\x84\x61x\xc3\x84\xc3\x96", 3, 1},
{BRE, "x\xc3\x96\\?z", "\xc3\x84xz\xc3\xb6", 2, 1},
{BRE, "x.y", "ax\xe2\x80\x94yz", 1, 1},
{BRE, "x.*z", "\xc3\x84xz", 2, 1},
{BRE, "x.*z", "\xc3\x84x\xe2\x80\x94z", 2, 1},
{BRE, "x.*z", "\xc3\x84x\xe2\x80\x94y\xf1\x90\x80\x90z", 2, 1},
{BRE, "x.*z", "\xc3\x84x\xe2\x80\x94\xc3\x94\xf1\x90\x80\x90z", 2, 1},
{BRE, "x.\\?z", "axz", 1, 1},
{BRE, "x.\\?z", "axyz", 1, 1},
{BRE, "x.\\?z", "ax\xc3\x84z", 1, 1},
{BRE, "x.\\?z", "ax\xe2\x80\x94z", 1, 1},
{BRE, "x.\\?z", "ax\xf0\x9d\x80\x80z", 1, 1},
{BRE, "x.\\?z", "ax\xf9\x81\x82\x83\x84z", 1, 1},
{BRE, "x.\\?z", "ax\xfd\xbf\xbf\xbf\xbf\xbfz", 1, 1},
{BRE, ".", "y", 0, 1},
{BRE, ".", "\xc3\x84", 0, 1},
{BRE, ".", "\xe2\x80\x94", 0, 1},
{BRE, ".", "\xf0\x9d\x80\x80", 0, 1},
{BRE, ".", "\xf9\x81\x82\x83\x84", 0, 1},
{BRE, ".", "\xfd\xbf\xbf\xbf\xbf\xbf", 0, 1},
{BRE, "x.\\?z", "axyyz", -1, 1},
{BRE, "x.\\?z", "ax\xc3\x84\xc3\x96z", -1, 1},
{BRE, "x.\\?z", "ax\xe2\x80\x94\xc3\xa4z", -1, 1},
{BRE, "x.\\?z", "ax\xf0\x9d\x80\x80yz", -1, 1},
{BRE, "x.\\?z", "ax\xf9\x81\x82\x83\x84\xf0\x9d\x80\x81z", -1, 1},
{BRE, "x.\\?z", "ax\xfd\xbf\xbf\xbf\xbf\xbf\xc3\x96z", -1, 1},
{BRE, "x.\\+z", "\xe2\x80\x94xz", -1, 1},
{BRE, "x.\\+z", "\xe2\x80\x94xyz", 3, 1},
{BRE, "x.\\+z", "\xe2\x80\x94x\xc3\x84y\xe2\x80\x94z", 3, 1},
{BRE, "x.\\+z", "\xe2\x80\x94x\xe2\x80\x94z", 3, 1},
{BRE, "x.\\+z", "\xe2\x80\x94x\xf0\x9d\x80\x80\xc3\x84z", 3, 1},
{BRE, "x.\\+z", "\xe2\x80\x94x.~\xe2\x80\x94\xf9\x81\x82\x83\x84z", 3, 1},
{BRE, "x.\\+z", "\xe2\x80\x94x\xfd\xbf\xbf\xbf\xbf\xbfz", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94xz", -1, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x\xc3\x96y\xc3\xa4z", -1, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94xyz", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x\xc3\x84\xe2\x80\x94z", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x\xe2\x80\x94z", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x\xf0\x9d\x80\x80\xc3\x84z", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x~\xe2\x80\x94z", 3, 1},
{BRE, "x.\\{1,2\\}z", "\xe2\x80\x94x\xfd\xbf\xbf\xbf\xbf\xbfz", 3, 1},
{BRE, "x\\(.w\\|\xc3\x86\\)\\?z", "axz", 1, 1},
{BRE, "x\\(.w\\|\xc3\x86\\)\\?z", "ax\xfd\xbf\xbf\xbf\xbf\xbfwz", 1, 1},
{BRE, "x\\(.w\\|\xc3\x86\\)\\?z", "ax\xc3\x86z", 1, 1},
{BRE, "x\\(.w\\|\xc3\x86\\)\\?z", "ax\xe2\x80\x96wz", 1, 1},
{ERE, "foo", "b\xc3\xa4rfoob\xc3\xa4z", 4, 1},
{ERE, "^x|xy*z$", "\xc3\xb6xyyz", 2, 1},
{ERE, "^x\\\\y{6}z+", "x\\yyyyyyzz\xc3\xb6", 0, 1},
{ERE, "^x\\\\y{2,36}z+", "x\\yzz\xc3\xb6", -1, 1},
{ERE, "^x\\\\y{,3}z+", "x\\yyyzz\xc3\xb6", 0, 1},
{ERE, "x[C]y", "axCy", 1, 1},
{ERE, "x[ABC]y", "axCy", 1, 1},
{ERE, "\\`x|z\\'", "x\xe2\x80\x94", 0, 1},
{ERE, "(xy)z\\1a\\1", "\xe2\x80\x94xyzxyaxy\xc3\x84", 3, 1},
{ERE, "xy?z", "\xc3\x84xz\xc3\xb6", 2, 1},
{ERE, "x.y", "ax\xe2\x80\x94yz", 1, 1},
{ERE, "x.*z", "\xc3\x84xz", 2, 1},
{ERE, "x.*z", "\xc3\x84x\xe2\x80\x94z", 2, 1},
{ERE, "x.*z", "\xc3\x84x\xe2\x80\x94y\xf1\x90\x80\x90z", 2, 1},
{ERE, "x.*z", "\xc3\x84x\xe2\x80\x94\xc3\x94\xf1\x90\x80\x90z", 2, 1},
{ERE, "x.?z", "axz", 1, 1},
{ERE, "x.?z", "axyz", 1, 1},
{ERE, "x.?z", "ax\xc3\x84z", 1, 1},
{ERE, "x.?z", "ax\xe2\x80\x94z", 1, 1},
{ERE, "x.?z", "ax\xf0\x9d\x80\x80z", 1, 1},
{ERE, "x.?z", "ax\xf9\x81\x82\x83\x84z", 1, 1},
{ERE, "x.?z", "ax\xfd\xbf\xbf\xbf\xbf\xbfz", 1, 1},
{ERE, "x.?z", "axyyz", -1, 1},
{ERE, "x.?z", "ax\xc3\x84\xc3\x96z", -1, 1},
{ERE, "x.?z", "ax\xe2\x80\x94\xc3\xa4z", -1, 1},
{ERE, "x.?z", "ax\xf0\x9d\x80\x80yz", -1, 1},
{ERE, "x.?z", "ax\xf9\x81\x82\x83\x84\xf0\x9d\x80\x81z", -1, 1},
{ERE, "x.?z", "ax\xfd\xbf\xbf\xbf\xbf\xbf\xc3\x96z", -1, 1},
{ERE, "x.+z", "\xe2\x80\x94xz", -1, 1},
{ERE, "x.+z", "\xe2\x80\x94xyz", 3, 1},
{ERE, "x.+z", "\xe2\x80\x94x\xc3\x84y\xe2\x80\x94z", 3, 1},
{ERE, "x.+z", "\xe2\x80\x94x\xe2\x80\x94z", 3, 1},
{ERE, "x.+z", "\xe2\x80\x94x\xf0\x9d\x80\x80\xc3\x84z", 3, 1},
{ERE, "x.+z", "\xe2\x80\x94x.~\xe2\x80\x94\xf9\x81\x82\x83\x84z", 3, 1},
{ERE, "x.+z", "\xe2\x80\x94x\xfd\xbf\xbf\xbf\xbf\xbfz", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94xz", -1, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x\xc3\x96y\xc3\xa4z", -1, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94xyz", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x\xc3\x84\xe2\x80\x94z", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x\xe2\x80\x94z", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x\xf0\x9d\x80\x80\xc3\x84z", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x~\xe2\x80\x94z", 3, 1},
{ERE, "x.{1,2}z", "\xe2\x80\x94x\xfd\xbf\xbf\xbf\xbf\xbfz", 3, 1},
{ERE, "x(.w|\xc3\x86)?z", "axz", 1, 1},
{ERE, "x(.w|\xc3\x86)?z", "ax\xfd\xbf\xbf\xbf\xbf\xbfwz", 1, 1},
{ERE, "x(.w|\xc3\x86)?z", "ax\xc3\x86z", 1, 1},
{ERE, "x(.w|\xc3\x86)?z", "ax\xe2\x80\x96wz", 1, 1},
/* Should not be optimized. */
{BRE, "x[\xc3\x84\xc3\xa4]y", "ax\xc3\xa4y", 1, 0},
{BRE, "x[A-Z,]y", "axCy", 1, 0},
{BRE, "x[^y]z", "ax\xe2\x80\x94z", 1, 0},
{BRE, "x[[:alnum:]]z", "ax\xc3\x96z", 1, 0},
{BRE, "x[[=A=]]z", "axAz", 1, 0},
{BRE, "x[[=\xc3\x84=]]z", "ax\xc3\x84z", 1, 0},
{BRE, "\\<g", "\xe2\x80\x94g", 3, 0},
{BRE, "\\bg\\b", "\xe2\x80\x94g", 3, 0},
{BRE, "\\Bg\\B", "\xc3\xa4g\xc3\xa4", 2, 0},
{BRE, "a\\wz", "a\xc3\x84z", 0, 0},
{BRE, "x\\Wz", "\xc3\x96x\xe2\x80\x94z", 2, 0},
{ERE, "x[\xc3\x84\xc3\xa4]y", "ax\xc3\xa4y", 1, 0},
{ERE, "x[A-Z,]y", "axCy", 1, 0},
{ERE, "x[^y]z", "ax\xe2\x80\x94z", 1, 0},
{ERE, "x[[:alnum:]]z", "ax\xc3\x96z", 1, 0},
{ERE, "x[[=A=]]z", "axAz", 1, 0},
{ERE, "x[[=\xc3\x84=]]z", "ax\xc3\x84z", 1, 0},
{ERE, "\\<g", "\xe2\x80\x94g", 3, 0},
{ERE, "\\bg\\b", "\xe2\x80\x94g", 3, 0},
{ERE, "\\Bg\\B", "\xc3\xa4g\xc3\xa4", 2, 0},
{ERE, "a\\wz", "a\xc3\x84z", 0, 0},
{ERE, "x\\Wz", "\xc3\x96x\xe2\x80\x94z", 2, 0},
};
int
main (void)
{
struct re_pattern_buffer regbuf;
const char *err;
size_t i;
int ret = 0;
mtrace ();
setlocale (LC_ALL, "de_DE.UTF-8");
for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
{
int res, optimized;
re_set_syntax (tests[i].syntax);
memset (&regbuf, '\0', sizeof (regbuf));
err = re_compile_pattern (tests[i].pattern, strlen (tests[i].pattern),
&regbuf);
if (err != NULL)
{
printf ("re_compile_pattern failed: %s\n", err);
ret = 1;
continue;
}
/* Check if re_search will be done as multi-byte or single-byte. */
optimized = ((re_dfa_t *) regbuf.buffer)->mb_cur_max == 1;
if (optimized != tests[i].optimize)
{
printf ("pattern %zd %soptimized while it should%s be\n",
i, optimized ? "" : "not ", tests[i].optimize ? "" : " not");
ret = 1;
}
int str_len = strlen (tests[i].string);
res = re_search (&regbuf, tests[i].string, str_len, 0, str_len, NULL);
if (res != tests[i].res)
{
printf ("re_search %zd failed: %d\n", i, res);
ret = 1;
regfree (&regbuf);
continue;
}
res = re_search (&regbuf, tests[i].string, str_len, str_len, -str_len,
NULL);
if (res != tests[i].res)
{
printf ("backward re_search %zd failed: %d\n", i, res);
ret = 1;
regfree (&regbuf);
continue;
}
regfree (&regbuf);
re_set_syntax (tests[i].syntax | RE_ICASE);
memset (&regbuf, '\0', sizeof (regbuf));
err = re_compile_pattern (tests[i].pattern, strlen (tests[i].pattern),
&regbuf);
if (err != NULL)
{
printf ("re_compile_pattern failed: %s\n", err);
ret = 1;
continue;
}
/* Check if re_search will be done as multi-byte or single-byte. */
optimized = ((re_dfa_t *) regbuf.buffer)->mb_cur_max == 1;
if (optimized)
{
printf ("pattern %zd optimized while it should not be when case insensitive\n",
i);
ret = 1;
}
res = re_search (&regbuf, tests[i].string, str_len, 0, str_len, NULL);
if (res != tests[i].res)
{
printf ("ICASE re_search %zd failed: %d\n", i, res);
ret = 1;
regfree (&regbuf);
continue;
}
res = re_search (&regbuf, tests[i].string, str_len, str_len, -str_len,
NULL);
if (res != tests[i].res)
{
printf ("ICASE backward re_search %zd failed: %d\n", i, res);
ret = 1;
regfree (&regbuf);
continue;
}
regfree (&regbuf);
}
return ret;
}
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