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Fix strtod ("NAN(I)") in Turkish locales (bug 19266).
The implementations of strtod and related functions use locale-specific conversions to lower case when parsing the contents of a string NAN(n-char-sequence_opt). This has the consequence that NAN(I) is not treated as being of that form (only the initial NAN part is accepted). The syntax of n-char-sequence directly maps to the ASCII letters, digits and underscore as in identifiers, so it is unambiguous that all ASCII letters must be accepted in all locales. This patch, relative to a tree with <https://sourceware.org/ml/libc-alpha/2015-11/msg00258.html> (pending review) applied and depending on that patch, fixes this problem by checking directly for ASCII letters. This will have the side effect of no longer accepting 'İ' (dotted 'I') inside NAN() in Turkish locales, which seems appropriate (that letter wouldn't have been interpreted as having any meaning in the NaN payload anyway, as not acceptable to strtoull). Tested for x86_64 and x86. [BZ #19266] * stdlib/strtod_l.c (____STRTOF_INTERNAL): Check directly for upper case and lower case letters inside NAN(), not using TOLOWER. * stdlib/tst-strtod-nan-locale-main.c: New file. * stdlib/tst-strtod-nan-locale.c: Likewise. * stdlib/Makefile (tests): Add tst-strtod-nan-locale. [$(run-built-tests) = yes] ($(objpfx)tst-strtod-nan-locale.out): Depend on $(gen-locales). ($(objpfx)tst-strtod-nan-locale): Depend on $(libm). * wcsmbs/tst-wcstod-nan-locale.c: New file. * wcsmbs/Makefile (tests): Add tst-wcstod-nan-locale. [$(run-built-tests) = yes] ($(objpfx)tst-wcstod-nan-locale.out): Depend on $(gen-locales). ($(objpfx)tst-wcstod-nan-locale): Depend on $(libm).
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Joseph Myers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* Test strtod functions work with all ASCII letters in NAN(...) in | ||
| Turkish locales (bug 19266). | ||
| Copyright (C) 2015 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 | ||
| <http://www.gnu.org/licenses/>. */ | ||
|
|
||
| #include <locale.h> | ||
| #include <math.h> | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <wchar.h> | ||
|
|
||
| #define STR_(X) #X | ||
| #define STR(X) STR_(X) | ||
| #define FNPFXS STR (FNPFX) | ||
| #define CONCAT_(X, Y) X ## Y | ||
| #define CONCAT(X, Y) CONCAT_ (X, Y) | ||
| #define FNX(FN) CONCAT (FNPFX, FN) | ||
|
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| #define TEST(LOC, STR, FN, TYPE) \ | ||
| do \ | ||
| { \ | ||
| CHAR *ep; \ | ||
| TYPE val = FNX (FN) (STR, &ep); \ | ||
| if (isnan (val) && *ep == 0) \ | ||
| printf ("PASS: %s: " FNPFXS #FN " (" SFMT ")\n", LOC, STR); \ | ||
| else \ | ||
| { \ | ||
| printf ("FAIL: %s: " FNPFXS #FN " (" SFMT ")\n", LOC, STR); \ | ||
| result = 1; \ | ||
| } \ | ||
| } \ | ||
| while (0) | ||
|
|
||
| static int | ||
| test_one_locale (const char *loc) | ||
| { | ||
| if (setlocale (LC_ALL, loc) == NULL) | ||
| { | ||
| printf ("setlocale (LC_ALL, \"%s\") failed\n", loc); | ||
| return 1; | ||
| } | ||
| int result = 0; | ||
| for (int i = 10; i < 36; i++) | ||
| { | ||
| CHAR s[7]; | ||
| s[0] = L_('N'); | ||
| s[1] = L_('A'); | ||
| s[2] = L_('N'); | ||
| s[3] = L_('('); | ||
| s[4] = L_('A') + i - 10; | ||
| s[5] = L_(')'); | ||
| s[6] = 0; | ||
| TEST (loc, s, f, float); | ||
| TEST (loc, s, d, double); | ||
| TEST (loc, s, ld, long double); | ||
| s[4] = L_('a') + i - 10; | ||
| TEST (loc, s, f, float); | ||
| TEST (loc, s, d, double); | ||
| TEST (loc, s, ld, long double); | ||
| } | ||
| return result; | ||
| } | ||
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| static int | ||
| do_test (void) | ||
| { | ||
| int result = 0; | ||
| result |= test_one_locale ("C"); | ||
| result |= test_one_locale ("tr_TR.UTF-8"); | ||
| result |= test_one_locale ("tr_TR.ISO-8859-9"); | ||
| return result; | ||
| } | ||
|
|
||
| #define TEST_FUNCTION do_test () | ||
| #include "../test-skeleton.c" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| /* Test strtod functions work with all ASCII letters in NAN(...) in | ||
| Turkish locales (bug 19266). Narrow string version. | ||
| Copyright (C) 2015 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 | ||
| <http://www.gnu.org/licenses/>. */ | ||
|
|
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| #define CHAR char | ||
| #define SFMT "\"%s\"" | ||
| #define FNPFX strto | ||
| #define L_(C) C | ||
|
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| #include <tst-strtod-nan-locale-main.c> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| /* Test strtod functions work with all ASCII letters in NAN(...) in | ||
| Turkish locales (bug 19266). Wide string version. | ||
| Copyright (C) 2015 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 | ||
| <http://www.gnu.org/licenses/>. */ | ||
|
|
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| #define CHAR wchar_t | ||
| #define SFMT "L\"%ls\"" | ||
| #define FNPFX wcsto | ||
| #define L_(C) L ## C | ||
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| #include "../stdlib/tst-strtod-nan-locale-main.c" |