X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Fregex.m4;h=24198b5570319d412cf6aa9a35cffd763de45550;hb=1a44d77d50f4fb37c0410eed04b82303624ea2ec;hp=38f1dd76b61030a7afe77d8050a30a156d5ba695;hpb=dda6367c9eac71da8f2ab1c60b3df60f19ce4755;p=debian%2Ftar diff --git a/m4/regex.m4 b/m4/regex.m4 index 38f1dd76..24198b55 100644 --- a/m4/regex.m4 +++ b/m4/regex.m4 @@ -1,7 +1,6 @@ -# serial 56 +# serial 58 -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, -# 2007, 2008, 2009, 2010 Free Software Foundation, Inc. +# Copyright (C) 1996-2001, 2003-2011 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. */ @@ -94,7 +87,7 @@ 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. */ @@ -102,34 +95,31 @@ AC_DEFUN([gl_REGEX], memset (®ex, 0, sizeof regex); s = re_compile_pattern ("a[b-a]", 6, ®ex); if (s == 0) - return 1; + 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. */ @@ -137,10 +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 @@ -151,12 +140,12 @@ 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; + result |= 64; #if 0 /* It would be nice to reject hosts whose regoff_t values are too @@ -167,10 +156,11 @@ AC_DEFUN([gl_REGEX], 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.