X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fregex.m4;h=41be5e8d3c128a3579891b21bc14a81fe2137937;hb=32d8297adbb0fc03f1e0706005e144c7f498507c;hp=a70225247f4fbade017921b5357d34d4edaf3313;hpb=b2e2010c7c902235b5efb5bd3c6529f61b093aa4;p=gnulib.git diff --git a/m4/regex.m4 b/m4/regex.m4 index a70225247..41be5e8d3 100644 --- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,7 +1,6 @@ -# serial 55 +# serial 61 -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, -# 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +# Copyright (C) 1996-2001, 2003-2012 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, @@ -14,8 +13,6 @@ AC_PREREQ([2.50]) AC_DEFUN([gl_REGEX], [ - AC_CHECK_HEADERS_ONCE([locale.h]) - AC_ARG_WITH([included-regex], [AS_HELP_STRING([--without-included-regex], [don't compile regex; this is the default on systems @@ -35,54 +32,50 @@ AC_DEFUN([gl_REGEX], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [AC_INCLUDES_DEFAULT[ - #if HAVE_LOCALE_H - #include - #endif + #include #include #include ]], - [[static struct re_pattern_buffer regex; + [[int result = 0; + static struct re_pattern_buffer regex; unsigned char folded_chars[UCHAR_MAX + 1]; int i; const char *s; struct re_registers regs; - #if HAVE_LOCALE_H - /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html - This test needs valgrind to catch the bug on Debian - GNU/Linux 3.1 x86, but it might catch the bug better - on other platforms and it shouldn't hurt to try the - test here. */ - if (setlocale (LC_ALL, "en_US.UTF-8")) - { - static char const pat[] = "insert into"; - static char const data[] = - "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK"; - re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE - | RE_ICASE); - memset (®ex, 0, sizeof regex); - s = re_compile_pattern (pat, sizeof pat - 1, ®ex); - if (s) - return 1; - if (re_search (®ex, data, sizeof data - 1, - 0, sizeof data - 1, ®s) - != -1) - return 1; - if (! setlocale (LC_ALL, "C")) - return 1; - } - #endif + /* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html + This test needs valgrind to catch the bug on Debian + GNU/Linux 3.1 x86, but it might catch the bug better + on other platforms and it shouldn't hurt to try the + test here. */ + if (setlocale (LC_ALL, "en_US.UTF-8")) + { + static char const pat[] = "insert into"; + static char const data[] = + "\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK"; + re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE + | RE_ICASE); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern (pat, sizeof pat - 1, ®ex); + if (s) + result |= 1; + else if (re_search (®ex, data, sizeof data - 1, + 0, sizeof data - 1, ®s) + != -1) + result |= 1; + if (! setlocale (LC_ALL, "C")) + return 1; + } /* This test is from glibc bug 3957, reported by Andrew Mackey. */ re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE); memset (®ex, 0, sizeof regex); s = re_compile_pattern ("a[^x]b", 6, ®ex); if (s) - return 1; - + result |= 2; /* This should fail, but succeeds for glibc-2.5. */ - if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1) - return 1; + else if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1) + result |= 2; /* This regular expression is from Spencer ere test number 75 in grep-2.3. */ @@ -94,34 +87,39 @@ AC_DEFUN([gl_REGEX], s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, ®ex); /* This should fail with _Invalid character class name_ error. */ if (!s) - return 1; + result |= 4; + + /* Ensure that [b-a] is diagnosed as invalid, when + using RE_NO_EMPTY_RANGES. */ + re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES); + memset (®ex, 0, sizeof regex); + s = re_compile_pattern ("a[b-a]", 6, ®ex); + if (s == 0) + result |= 8; /* This should succeed, but does not for glibc-2.1.3. */ memset (®ex, 0, sizeof regex); s = re_compile_pattern ("{1", 2, ®ex); - if (s) - return 1; + result |= 8; /* The following example is derived from a problem report against gawk from Jorge Stolfi . */ memset (®ex, 0, sizeof regex); s = re_compile_pattern ("[an\371]*n", 7, ®ex); if (s) - return 1; - + result |= 8; /* This should match, but does not for glibc-2.2.1. */ - if (re_match (®ex, "an", 2, 0, ®s) != 2) - return 1; + else if (re_match (®ex, "an", 2, 0, ®s) != 2) + result |= 8; memset (®ex, 0, sizeof regex); s = re_compile_pattern ("x", 1, ®ex); if (s) - return 1; - + result |= 8; /* glibc-2.2.93 does not work with a negative RANGE argument. */ - if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1) - return 1; + else if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1) + result |= 8; /* The version of regex.c in older versions of gnulib ignored RE_ICASE. Detect that problem too. */ @@ -129,10 +127,9 @@ AC_DEFUN([gl_REGEX], memset (®ex, 0, sizeof regex); s = re_compile_pattern ("x", 1, ®ex); if (s) - return 1; - - if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0) - return 1; + result |= 16; + else if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0) + result |= 16; /* Catch a bug reported by Vin Shelton in http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html @@ -143,21 +140,27 @@ AC_DEFUN([gl_REGEX], memset (®ex, 0, sizeof regex); s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, ®ex); if (s) - return 1; + result |= 32; /* REG_STARTEND was added to glibc on 2004-01-15. Reject older versions. */ if (! REG_STARTEND) - return 1; - - /* Reject hosts whose regoff_t values are too narrow. - These include glibc 2.3.5 on hosts with 64-bit ptrdiff_t - and 32-bit int. */ + result |= 64; + +#if 0 + /* It would be nice to reject hosts whose regoff_t values are too + narrow (including glibc on hosts with 64-bit ptrdiff_t and + 32-bit int), but we should wait until glibc implements this + feature. Otherwise, support for equivalence classes and + multibyte collation symbols would always be broken except + when compiling --without-included-regex. */ if (sizeof (regoff_t) < sizeof (ptrdiff_t) || sizeof (regoff_t) < sizeof (ssize_t)) - return 1; + result |= 64; +#endif - return 0;]])], + return result; + ]])], [gl_cv_func_re_compile_pattern_working=yes], [gl_cv_func_re_compile_pattern_working=no], dnl When crosscompiling, assume it is not working. @@ -172,6 +175,9 @@ AC_DEFUN([gl_REGEX], esac if test $ac_use_included_regex = yes; then + AC_DEFINE([_REGEX_INCLUDE_LIMITS_H], [1], + [Define if you want to include , so that it + consistently overrides 's RE_DUP_MAX.]) AC_DEFINE([_REGEX_LARGE_OFFSETS], [1], [Define if you want regoff_t to be at least as wide POSIX requires.]) AC_DEFINE([re_syntax_options], [rpl_re_syntax_options], @@ -204,8 +210,6 @@ AC_DEFUN([gl_REGEX], [Define to rpl_regerror if the replacement should be used.]) AC_DEFINE([regfree], [rpl_regfree], [Define to rpl_regfree if the replacement should be used.]) - AC_LIBOBJ([regex]) - gl_PREREQ_REGEX fi ]) @@ -218,5 +222,5 @@ AC_DEFUN([gl_PREREQ_REGEX], AC_REQUIRE([AC_TYPE_MBSTATE_T]) AC_CHECK_HEADERS([libintl.h]) AC_CHECK_FUNCS_ONCE([isblank iswctype wcscoll]) - AC_CHECK_DECLS([isblank], [], [], [#include ]) + AC_CHECK_DECLS([isblank], [], [], [[#include ]]) ])