glibc/wcsmbs
Joseph Myers e02cabecf0 Refactor strtod parsing of NaN payloads.
The nan* functions handle their string argument by constructing a
NAN(...) string on the stack as a VLA and passing it to strtod
functions.

This approach has problems discussed in bug 16961 and bug 16962: the
stack usage is unbounded, and it gives incorrect results in certain
cases where the argument is not a valid n-char-sequence.

The natural fix for both issues is to refactor the NaN payload parsing
out of strtod into a separate function that the nan* functions can
call directly, so that no temporary string needs constructing on the
stack at all.  This patch does that refactoring in preparation for
fixing those bugs (but without actually using the new functions from
nan* - which will also require exporting them from libc at version
GLIBC_PRIVATE).  This patch is not intended to change any user-visible
behavior, so no tests are added (fixes for the above bugs will of
course add tests for them).

This patch builds on my recent fixes for strtol and strtod issues in
Turkish locales.  Given those fixes, the parsing of NaN payloads is
locale-independent; thus, the new functions do not need to take a
locale_t argument.

Tested for x86_64, x86, mips64 and powerpc.

	* stdlib/strtod_nan.c: New file.
	* stdlib/strtod_nan_double.h: Likewise.
	* stdlib/strtod_nan_float.h: Likewise.
	* stdlib/strtod_nan_main.c: Likewise.
	* stdlib/strtod_nan_narrow.h: Likewise.
	* stdlib/strtod_nan_wide.h: Likewise.
	* stdlib/strtof_nan.c: Likewise.
	* stdlib/strtold_nan.c: Likewise.
	* sysdeps/ieee754/ldbl-128/strtod_nan_ldouble.h: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/strtod_nan_ldouble.h: Likewise.
	* sysdeps/ieee754/ldbl-96/strtod_nan_ldouble.h: Likewise.
	* wcsmbs/wcstod_nan.c: Likewise.
	* wcsmbs/wcstof_nan.c: Likewise.
	* wcsmbs/wcstold_nan.c: Likewise.
	* stdlib/Makefile (routines): Add strtof_nan, strtod_nan and
	strtold_nan.
	* wcsmbs/Makefile (routines): Add wcstod_nan, wcstold_nan and
	wcstof_nan.
	* include/stdlib.h (__strtof_nan): Declare and use
	libc_hidden_proto.
	(__strtod_nan): Likewise.
	(__strtold_nan): Likewise.
	(__wcstof_nan): Likewise.
	(__wcstod_nan): Likewise.
	(__wcstold_nan): Likewise.
	* include/wchar.h (____wcstoull_l_internal): Declare.
	* stdlib/strtod_l.c: Do not include <ieee754.h>.
	(____strtoull_l_internal): Remove declaration.
	(STRTOF_NAN): Define macro.
	(SET_MANTISSA): Remove macro.
	(STRTOULL): Likewise.
	(____STRTOF_INTERNAL): Use STRTOF_NAN to parse NaN payload.
	* stdlib/strtof_l.c (____strtoull_l_internal): Remove declaration.
	(STRTOF_NAN): Define macro.
	(SET_MANTISSA): Remove macro.
	* sysdeps/ieee754/ldbl-128/strtold_l.c (STRTOF_NAN): Define macro.
	(SET_MANTISSA): Remove macro.
	* sysdeps/ieee754/ldbl-128ibm/strtold_l.c (STRTOF_NAN): Define
	macro.
	(SET_MANTISSA): Remove macro.
	* sysdeps/ieee754/ldbl-64-128/strtold_l.c (STRTOF_NAN): Define
	macro.
	(SET_MANTISSA): Remove macro.
	* sysdeps/ieee754/ldbl-96/strtold_l.c (STRTOF_NAN): Define macro.
	(SET_MANTISSA): Remove macro.
	* wcsmbs/wcstod_l.c (____wcstoull_l_internal): Remove declaration.
	* wcsmbs/wcstof_l.c (____wcstoull_l_internal): Likewise.
	* wcsmbs/wcstold_l.c (____wcstoull_l_internal): Likewise.
2015-11-24 22:24:52 +00:00
..
bits Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
btowc.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
c16rtomb.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Depend Update. 2000-09-06 22:15:07 +00:00
isoc99_fwscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
isoc99_swscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
isoc99_vfwscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
isoc99_vswscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
isoc99_vwscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
isoc99_wscanf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Makefile Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
mbrlen.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
mbrtoc16.c Handle mblen return code when n is zero. 2015-04-03 15:47:12 +02:00
mbrtowc.c Handle mblen return code when n is zero. 2015-04-03 15:47:12 +02:00
mbsinit.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
mbsnrtowcs.c Convert 113 more function definitions to prototype style (files with assertions). 2015-10-20 11:54:09 +00:00
mbsrtowcs_l.c Convert 113 more function definitions to prototype style (files with assertions). 2015-10-20 11:54:09 +00:00
mbsrtowcs.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
test-wcpcpy.c S390: Optimize stpcpy and wcpcpy. 2015-08-26 10:26:21 +02:00
test-wcpncpy.c S390: Optimize stpncpy and wcpncpy. 2015-08-26 10:26:21 +02:00
test-wcscat.c S390: Optimize strcat and wcscat. 2015-08-26 10:26:21 +02:00
test-wcschr.c Add wcschr test cases 2011-10-23 14:14:26 -04:00
test-wcschrnul.c S390: Optimize strchrnul and wcschrnul. 2015-08-26 10:26:23 +02:00
test-wcscmp.c Move wide char tests to wcsmbs directory 2011-09-08 18:01:07 -04:00
test-wcscpy.c Add tests for wcsrchr and wcscpy 2011-12-17 14:14:58 -05:00
test-wcscspn.c S390: Optimize strcspn and wcscspn. 2015-08-26 10:26:24 +02:00
test-wcslen.c Add wcslen test cases 2011-10-23 14:11:50 -04:00
test-wcsncat.c S390: Optimize strncat wcsncat. 2015-08-26 10:26:22 +02:00
test-wcsncmp.c Use correct signedness in wcsncmp 2015-04-13 21:25:04 +02:00
test-wcsncpy.c S390: Optimize strncpy and wcsncpy. 2015-08-26 10:26:21 +02:00
test-wcsnlen.c S390: Optimize strnlen and wcsnlen. 2015-08-26 10:26:20 +02:00
test-wcspbrk.c S390: Optimize strpbrk and wcspbrk. 2015-08-26 10:26:24 +02:00
test-wcsrchr.c Add tests for wcsrchr and wcscpy 2011-12-17 14:14:58 -05:00
test-wcsspn.c S390: Optimize strspn and wcsspn. 2015-08-26 10:26:24 +02:00
test-wmemchr.c S390: Optimize memchr, rawmemchr and wmemchr. 2015-08-26 10:26:24 +02:00
test-wmemcmp.c Move wide char tests to wcsmbs directory 2011-09-08 18:01:07 -04:00
test-wmemset.c S390: Optimize wmemset. 2015-08-26 10:26:25 +02:00
tst-btowc.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-c16c32-1.c Add #include <stdint.h> for uint[32|64]_t usage (except installed headers). 2013-05-16 11:32:54 -05:00
tst-mbrtowc2.c * wcsmbs/tst-mbrtowc2.c: Use de_DE.UTF-8 instead of en_US.UTF-8. 2005-10-15 15:38:52 +00:00
tst-mbrtowc.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-mbsrtowcs.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-wchar-h.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-wcpncpy.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-wcrtomb.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-wcsnlen.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-wcstod-nan-locale.c Fix strtod ("NAN(I)") in Turkish locales (bug 19266). 2015-11-24 22:21:59 +00:00
tst-wcstof.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-wcstol-locale.c Fix strtol in Turkish locales (bug 19242). 2015-11-23 08:50:53 +00:00
uchar.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Versions Sort Versions files 2013-02-17 16:34:04 +01:00
wchar.h Updated __nonnull annotations for wcscat, wcsncat, wcscmp and wcsncmp [BZ #18265] 2015-08-05 04:43:42 -04:00
wcpcpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcpncpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcrtomb.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcsatcliff.c Fix handling of tail bytes of buffer in SSE2/SSSE3 x86-64 version strn{,case}cmp 2010-10-03 22:10:30 -04:00
wcscasecmp_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcscasecmp.c Convert miscellaneous function definitions to prototype style. 2015-10-20 21:27:22 +00:00
wcscat.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcschr.c powerpc: Fix __wcschr static build 2015-04-15 16:01:48 -03:00
wcschrnul.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcscmp.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcscoll_l.c strcoll: Remove incorrect STRDIFF-based optimization (Bug 18589). 2015-10-08 16:41:45 -04:00
wcscoll.c Fix regcomp wcscoll, wcscmp namespace (bug 18497). 2015-06-09 21:07:30 +00:00
wcscpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcscspn.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsdup.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcslen.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsmbs-tst1.c Add dependencies on needed locales in each subdir tests (bug 18969) 2015-10-12 15:18:08 +02:00
wcsmbsload.c Move bits/libc-lock.h and bits/libc-lockP.h out of bits/ (bug 14912). 2015-09-08 21:11:03 +00:00
wcsmbsload.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcsncase_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcsncase.c Convert miscellaneous function definitions to prototype style. 2015-10-20 21:27:22 +00:00
wcsncat.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsncmp.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsncpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsnlen.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsnrtombs.c Convert 113 more function definitions to prototype style (files with assertions). 2015-10-20 11:54:09 +00:00
wcspbrk.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsrchr.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsrtombs.c Convert 113 more function definitions to prototype style (files with assertions). 2015-10-20 11:54:09 +00:00
wcsspn.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcsstr.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcstod_l.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstod_nan.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstod.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstof_l.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstof_nan.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstof.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstok.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcstol_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstol.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstold_l.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstold_nan.c Refactor strtod parsing of NaN payloads. 2015-11-24 22:24:52 +00:00
wcstold.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoll_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoll.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoul_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoul.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoull_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoull.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcswidth.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcsxfrm_l.c Remove unused definitions 2015-02-11 12:50:53 +01:00
wcsxfrm.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wctob.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wcwidth.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcwidth.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wmemchr.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wmemcmp.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wmemcpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wmemmove.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wmempcpy.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00
wmemset.c Convert 703 function definitions to prototype style. 2015-10-16 20:21:49 +00:00