procyberian/emacs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Update from Gnulib

Browse source 
This incorporates:
2020-09-05 verify: avoid __builtin_assume
2020-08-30 strerrorname_np: New module
2020-08-26 include_next, stdint, time_rz: Change configure message
* lib/gnulib.mk.in: Regenerate.
* lib/string.in.h, lib/verify.h, m4/include_next.m4, m4/stdint.m4:
* m4/string_h.m4, m4/time_rz.m4: Copy from Gnulib.
This commit is contained in:
Paul Eggert 2020-09-05 17:48:45 -07:00
parent 2c1d839778
commit 2bba9cd409
7 changed files with 110 additions and 102 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
lib/gnulib.mk.in
View file

@ -442,6 +442,7 @@ GNULIB_STRCASESTR = @GNULIB_STRCASESTR@
GNULIB_STRCHRNUL = @GNULIB_STRCHRNUL@
GNULIB_STRDUP = @GNULIB_STRDUP@
GNULIB_STRERROR = @GNULIB_STRERROR@
GNULIB_STRERRORNAME_NP = @GNULIB_STRERRORNAME_NP@
GNULIB_STRERROR_R = @GNULIB_STRERROR_R@
GNULIB_STRFTIME = @GNULIB_STRFTIME@
GNULIB_STRNCAT = @GNULIB_STRNCAT@
@ -662,6 +663,7 @@ HAVE_STPCPY = @HAVE_STPCPY@
HAVE_STPNCPY = @HAVE_STPNCPY@
HAVE_STRCASESTR = @HAVE_STRCASESTR@
HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
HAVE_STRERRORNAME_NP = @HAVE_STRERRORNAME_NP@
HAVE_STRPBRK = @HAVE_STRPBRK@
HAVE_STRPTIME = @HAVE_STRPTIME@
HAVE_STRSEP = @HAVE_STRSEP@
@ -965,6 +967,7 @@ REPLACE_STRCASESTR = @REPLACE_STRCASESTR@
REPLACE_STRCHRNUL = @REPLACE_STRCHRNUL@
REPLACE_STRDUP = @REPLACE_STRDUP@
REPLACE_STRERROR = @REPLACE_STRERROR@
REPLACE_STRERRORNAME_NP = @REPLACE_STRERRORNAME_NP@
REPLACE_STRERROR_R = @REPLACE_STRERROR_R@
REPLACE_STRFTIME = @REPLACE_STRFTIME@
REPLACE_STRNCAT = @REPLACE_STRNCAT@
@ -2859,6 +2862,7 @@ string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's/@''GNULIB_STRTOK_R''@/$(GNULIB_STRTOK_R)/g' \
-e 's/@''GNULIB_STRERROR''@/$(GNULIB_STRERROR)/g' \
-e 's/@''GNULIB_STRERROR_R''@/$(GNULIB_STRERROR_R)/g' \
-e 's/@''GNULIB_STRERRORNAME_NP''@/$(GNULIB_STRERRORNAME_NP)/g' \
-e 's/@''GNULIB_SIGABBREV_NP''@/$(GNULIB_SIGABBREV_NP)/g' \
-e 's/@''GNULIB_SIGDESCR_NP''@/$(GNULIB_SIGDESCR_NP)/g' \
-e 's/@''GNULIB_STRSIGNAL''@/$(GNULIB_STRSIGNAL)/g' \
@ -2883,6 +2887,7 @@ string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's|@''HAVE_STRCASESTR''@|$(HAVE_STRCASESTR)|g' \
-e 's|@''HAVE_DECL_STRTOK_R''@|$(HAVE_DECL_STRTOK_R)|g' \
-e 's|@''HAVE_DECL_STRERROR_R''@|$(HAVE_DECL_STRERROR_R)|g' \
-e 's|@''HAVE_STRERRORNAME_NP''@|$(HAVE_STRERRORNAME_NP)|g' \
-e 's|@''HAVE_SIGABBREV_NP''@|$(HAVE_SIGABBREV_NP)|g' \
-e 's|@''HAVE_SIGDESCR_NP''@|$(HAVE_SIGDESCR_NP)|g' \
-e 's|@''HAVE_DECL_STRSIGNAL''@|$(HAVE_DECL_STRSIGNAL)|g' \
@ -2900,6 +2905,7 @@ string.h: string.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's|@''REPLACE_STRTOK_R''@|$(REPLACE_STRTOK_R)|g' \
-e 's|@''REPLACE_STRERROR''@|$(REPLACE_STRERROR)|g' \
-e 's|@''REPLACE_STRERROR_R''@|$(REPLACE_STRERROR_R)|g' \
-e 's|@''REPLACE_STRERRORNAME_NP''@|$(REPLACE_STRERRORNAME_NP)|g' \
-e 's|@''REPLACE_STRSIGNAL''@|$(REPLACE_STRSIGNAL)|g' \
-e 's|@''UNDEFINE_STRTOK_R''@|$(UNDEFINE_STRTOK_R)|g' \
-e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \

24
lib/string.in.h
View file

@ -1045,6 +1045,30 @@ _GL_WARN_ON_USE (strerror_r, "strerror_r is unportable - "
# endif
#endif
/* Return the name of the system error code ERRNUM. */
#if @GNULIB_STRERRORNAME_NP@
# if @REPLACE_STRERRORNAME_NP@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef strerrorname_np
# define strerrorname_np rpl_strerrorname_np
# endif
_GL_FUNCDECL_RPL (strerrorname_np, const char *, (int errnum));
_GL_CXXALIAS_RPL (strerrorname_np, const char *, (int errnum));
# else
# if !@HAVE_STRERRORNAME_NP@
_GL_FUNCDECL_SYS (strerrorname_np, const char *, (int errnum));
# endif
_GL_CXXALIAS_SYS (strerrorname_np, const char *, (int errnum));
# endif
_GL_CXXALIASWARN (strerrorname_np);
#elif defined GNULIB_POSIXCHECK
# undef strerrorname_np
# if HAVE_RAW_DECL_STRERRORNAME_NP
_GL_WARN_ON_USE (strerrorname_np, "strerrorname_np is unportable - "
"use gnulib module strerrorname_np for portability");
# endif
#endif
/* Return an abbreviation string for the signal number SIG. */
#if @GNULIB_SIGABBREV_NP@
# if ! @HAVE_SIGABBREV_NP@

43
lib/verify.h
View file

@ -246,13 +246,6 @@ template <int w>
/* @assert.h omit start@ */
#if defined __has_builtin
/* <https://clang.llvm.org/docs/LanguageExtensions.html#builtin-functions> */
# define _GL_HAS_BUILTIN_ASSUME __has_builtin (__builtin_assume)
#else
# define _GL_HAS_BUILTIN_ASSUME 0
#endif
#if 3 < __GNUC__ + (3 < __GNUC_MINOR__ + (4 <= __GNUC_PATCHLEVEL__))
# define _GL_HAS_BUILTIN_TRAP 1
#elif defined __has_builtin
@ -312,36 +305,14 @@ template <int w>
Although assuming R can help a compiler generate better code or
diagnostics, performance can suffer if R uses hard-to-optimize
features such as function calls not inlined by the compiler. */
features such as function calls not inlined by the compiler.
/* Use __builtin_assume in preference to __builtin_unreachable, because
in clang versions 8.0.x and older, the definition based on
__builtin_assume has an effect on optimizations, whereas the definition
based on __builtin_unreachable does not. (GCC so far has only
__builtin_unreachable.) */
#if _GL_HAS_BUILTIN_ASSUME
/* Use __builtin_constant_p to help clang's data-flow analysis for the case
assume (0).
Use a temporary variable, to avoid a clang warning
"the argument to '__builtin_assume' has side effects that will be discarded"
if R contains invocations of functions not marked as 'const'.
The type of the temporary variable can't be __typeof__ (R), because that
does not work on bit field expressions. Use '_Bool' or 'bool' as type
instead. */
# if defined __cplusplus
# define assume(R) \
(__builtin_constant_p (R) && !(R) \
? (void) __builtin_unreachable () \
: (void) ({ bool _gl_verify_temp = (R); \
__builtin_assume (_gl_verify_temp); }))
# else
# define assume(R) \
(__builtin_constant_p (R) && !(R) \
? (void) __builtin_unreachable () \
: (void) ({ _Bool _gl_verify_temp = (R); \
__builtin_assume (_gl_verify_temp); }))
# endif
#elif _GL_HAS_BUILTIN_UNREACHABLE
Avoid Clang's __builtin_assume, as it breaks GNU Emacs master
as of 2020-08-23T21:09:49Z!eggert@cs.ucla.edu; see
<https://bugs.gnu.org/43152#71>. It's not known whether this breakage
is a Clang bug or an Emacs bug; play it safe for now. */
#if _GL_HAS_BUILTIN_UNREACHABLE
# define assume(R) ((R) ? (void) 0 : __builtin_unreachable ())
#elif 1200 <= _MSC_VER
# define assume(R) __assume (R)

18
m4/include_next.m4
View file

@ -1,4 +1,4 @@
# include_next.m4 serial 25
# include_next.m4 serial 26
dnl Copyright (C) 2006-2020 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -106,19 +106,21 @@ dnl We intentionally avoid using AC_LANG_SOURCE here.
AC_SUBST([INCLUDE_NEXT])
AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE])
AC_SUBST([PRAGMA_SYSTEM_HEADER])
AC_CACHE_CHECK([whether system header files limit the line length],
[gl_cv_pragma_columns],
[dnl HP NonStop systems, which define __TANDEM, have this misfeature.
AC_EGREP_CPP([choke me],
dnl HP NonStop systems, which define __TANDEM, limit the line length
dnl after including some system header files.
AC_CACHE_CHECK([whether source code line length is unlimited],
[gl_cv_source_line_length_unlimited],
[AC_EGREP_CPP([choke me],
[
#ifdef __TANDEM
choke me
#endif
],
[gl_cv_pragma_columns=yes],
[gl_cv_pragma_columns=no])
[gl_cv_source_line_length_unlimited=no],
[gl_cv_source_line_length_unlimited=yes])
])
if test $gl_cv_pragma_columns = yes; then
if test $gl_cv_source_line_length_unlimited = no; then
PRAGMA_COLUMNS="#pragma COLUMNS 10000"
else
PRAGMA_COLUMNS=

18
m4/stdint.m4
View file

@ -1,4 +1,4 @@
# stdint.m4 serial 55
# stdint.m4 serial 56
dnl Copyright (C) 2001-2020 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@ -302,9 +302,10 @@ static const char *macro_values[] =
HAVE_C99_STDINT_H=1
dnl Now see whether the system <stdint.h> works without
dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
AC_CACHE_CHECK([whether stdint.h predates C++11],
[gl_cv_header_stdint_predates_cxx11_h],
[gl_cv_header_stdint_predates_cxx11_h=yes
dnl If not, there would be problems when stdint.h is included from C++.
AC_CACHE_CHECK([whether stdint.h works without ISO C predefines],
[gl_cv_header_stdint_without_STDC_macros],
[gl_cv_header_stdint_without_STDC_macros=no
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
@ -315,13 +316,14 @@ gl_STDINT_INCLUDES
intmax_t im = INTMAX_MAX;
int32_t i32 = INT32_C (0x7fffffff);
]])],
[gl_cv_header_stdint_predates_cxx11_h=no])])
[gl_cv_header_stdint_without_STDC_macros=yes])
])
if test "$gl_cv_header_stdint_predates_cxx11_h" = yes; then
if test $gl_cv_header_stdint_without_STDC_macros = no; then
AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
[Define to 1 if the system <stdint.h> predates C++11.])
[Define to 1 if the system <stdint.h> predates C++11.])
AC_DEFINE([__STDC_LIMIT_MACROS], [1],
[Define to 1 if the system <stdint.h> predates C++11.])
[Define to 1 if the system <stdint.h> predates C++11.])
fi
AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
[gl_cv_header_stdint_width],

89
m4/string_h.m4
View file

@ -5,7 +5,7 @@
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# serial 26
# serial 27
# Written by Paul Eggert.
@ -28,7 +28,7 @@ AC_DEFUN([gl_HEADER_STRING_H_BODY],
]],
[ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul
strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r
strerror_r sigabbrev_np sigdescr_np strsignal strverscmp])
strerror_r strerrorname_np sigabbrev_np sigdescr_np strsignal strverscmp])
AC_REQUIRE([AC_C_RESTRICT])
])
@ -44,47 +44,48 @@ AC_DEFUN([gl_STRING_MODULE_INDICATOR],
AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
[
GNULIB_EXPLICIT_BZERO=0; AC_SUBST([GNULIB_EXPLICIT_BZERO])
GNULIB_FFSL=0; AC_SUBST([GNULIB_FFSL])
GNULIB_FFSLL=0; AC_SUBST([GNULIB_FFSLL])
GNULIB_MEMCHR=0; AC_SUBST([GNULIB_MEMCHR])
GNULIB_MEMMEM=0; AC_SUBST([GNULIB_MEMMEM])
GNULIB_MEMPCPY=0; AC_SUBST([GNULIB_MEMPCPY])
GNULIB_MEMRCHR=0; AC_SUBST([GNULIB_MEMRCHR])
GNULIB_RAWMEMCHR=0; AC_SUBST([GNULIB_RAWMEMCHR])
GNULIB_STPCPY=0; AC_SUBST([GNULIB_STPCPY])
GNULIB_STPNCPY=0; AC_SUBST([GNULIB_STPNCPY])
GNULIB_STRCHRNUL=0; AC_SUBST([GNULIB_STRCHRNUL])
GNULIB_STRDUP=0; AC_SUBST([GNULIB_STRDUP])
GNULIB_STRNCAT=0; AC_SUBST([GNULIB_STRNCAT])
GNULIB_STRNDUP=0; AC_SUBST([GNULIB_STRNDUP])
GNULIB_STRNLEN=0; AC_SUBST([GNULIB_STRNLEN])
GNULIB_STRPBRK=0; AC_SUBST([GNULIB_STRPBRK])
GNULIB_STRSEP=0; AC_SUBST([GNULIB_STRSEP])
GNULIB_STRSTR=0; AC_SUBST([GNULIB_STRSTR])
GNULIB_STRCASESTR=0; AC_SUBST([GNULIB_STRCASESTR])
GNULIB_STRTOK_R=0; AC_SUBST([GNULIB_STRTOK_R])
GNULIB_MBSLEN=0; AC_SUBST([GNULIB_MBSLEN])
GNULIB_MBSNLEN=0; AC_SUBST([GNULIB_MBSNLEN])
GNULIB_MBSCHR=0; AC_SUBST([GNULIB_MBSCHR])
GNULIB_MBSRCHR=0; AC_SUBST([GNULIB_MBSRCHR])
GNULIB_MBSSTR=0; AC_SUBST([GNULIB_MBSSTR])
GNULIB_MBSCASECMP=0; AC_SUBST([GNULIB_MBSCASECMP])
GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP])
GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP])
GNULIB_MBSCASESTR=0; AC_SUBST([GNULIB_MBSCASESTR])
GNULIB_MBSCSPN=0; AC_SUBST([GNULIB_MBSCSPN])
GNULIB_MBSPBRK=0; AC_SUBST([GNULIB_MBSPBRK])
GNULIB_MBSSPN=0; AC_SUBST([GNULIB_MBSSPN])
GNULIB_MBSSEP=0; AC_SUBST([GNULIB_MBSSEP])
GNULIB_MBSTOK_R=0; AC_SUBST([GNULIB_MBSTOK_R])
GNULIB_STRERROR=0; AC_SUBST([GNULIB_STRERROR])
GNULIB_STRERROR_R=0; AC_SUBST([GNULIB_STRERROR_R])
GNULIB_SIGABBREV_NP=0;AC_SUBST([GNULIB_SIGABBREV_NP])
GNULIB_SIGDESCR_NP=0; AC_SUBST([GNULIB_SIGDESCR_NP])
GNULIB_STRSIGNAL=0; AC_SUBST([GNULIB_STRSIGNAL])
GNULIB_STRVERSCMP=0; AC_SUBST([GNULIB_STRVERSCMP])
HAVE_MBSLEN=0; AC_SUBST([HAVE_MBSLEN])
GNULIB_EXPLICIT_BZERO=0; AC_SUBST([GNULIB_EXPLICIT_BZERO])
GNULIB_FFSL=0; AC_SUBST([GNULIB_FFSL])
GNULIB_FFSLL=0; AC_SUBST([GNULIB_FFSLL])
GNULIB_MEMCHR=0; AC_SUBST([GNULIB_MEMCHR])
GNULIB_MEMMEM=0; AC_SUBST([GNULIB_MEMMEM])
GNULIB_MEMPCPY=0; AC_SUBST([GNULIB_MEMPCPY])
GNULIB_MEMRCHR=0; AC_SUBST([GNULIB_MEMRCHR])
GNULIB_RAWMEMCHR=0; AC_SUBST([GNULIB_RAWMEMCHR])
GNULIB_STPCPY=0; AC_SUBST([GNULIB_STPCPY])
GNULIB_STPNCPY=0; AC_SUBST([GNULIB_STPNCPY])
GNULIB_STRCHRNUL=0; AC_SUBST([GNULIB_STRCHRNUL])
GNULIB_STRDUP=0; AC_SUBST([GNULIB_STRDUP])
GNULIB_STRNCAT=0; AC_SUBST([GNULIB_STRNCAT])
GNULIB_STRNDUP=0; AC_SUBST([GNULIB_STRNDUP])
GNULIB_STRNLEN=0; AC_SUBST([GNULIB_STRNLEN])
GNULIB_STRPBRK=0; AC_SUBST([GNULIB_STRPBRK])
GNULIB_STRSEP=0; AC_SUBST([GNULIB_STRSEP])
GNULIB_STRSTR=0; AC_SUBST([GNULIB_STRSTR])
GNULIB_STRCASESTR=0; AC_SUBST([GNULIB_STRCASESTR])
GNULIB_STRTOK_R=0; AC_SUBST([GNULIB_STRTOK_R])
GNULIB_MBSLEN=0; AC_SUBST([GNULIB_MBSLEN])
GNULIB_MBSNLEN=0; AC_SUBST([GNULIB_MBSNLEN])
GNULIB_MBSCHR=0; AC_SUBST([GNULIB_MBSCHR])
GNULIB_MBSRCHR=0; AC_SUBST([GNULIB_MBSRCHR])
GNULIB_MBSSTR=0; AC_SUBST([GNULIB_MBSSTR])
GNULIB_MBSCASECMP=0; AC_SUBST([GNULIB_MBSCASECMP])
GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP])
GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP])
GNULIB_MBSCASESTR=0; AC_SUBST([GNULIB_MBSCASESTR])
GNULIB_MBSCSPN=0; AC_SUBST([GNULIB_MBSCSPN])
GNULIB_MBSPBRK=0; AC_SUBST([GNULIB_MBSPBRK])
GNULIB_MBSSPN=0; AC_SUBST([GNULIB_MBSSPN])
GNULIB_MBSSEP=0; AC_SUBST([GNULIB_MBSSEP])
GNULIB_MBSTOK_R=0; AC_SUBST([GNULIB_MBSTOK_R])
GNULIB_STRERROR=0; AC_SUBST([GNULIB_STRERROR])
GNULIB_STRERROR_R=0; AC_SUBST([GNULIB_STRERROR_R])
GNULIB_STRERRORNAME_NP=0; AC_SUBST([GNULIB_STRERRORNAME_NP])
GNULIB_SIGABBREV_NP=0; AC_SUBST([GNULIB_SIGABBREV_NP])
GNULIB_SIGDESCR_NP=0; AC_SUBST([GNULIB_SIGDESCR_NP])
GNULIB_STRSIGNAL=0; AC_SUBST([GNULIB_STRSIGNAL])
GNULIB_STRVERSCMP=0; AC_SUBST([GNULIB_STRVERSCMP])
HAVE_MBSLEN=0; AC_SUBST([HAVE_MBSLEN])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_EXPLICIT_BZERO=1; AC_SUBST([HAVE_EXPLICIT_BZERO])
HAVE_FFSL=1; AC_SUBST([HAVE_FFSL])
@ -104,6 +105,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
HAVE_STRCASESTR=1; AC_SUBST([HAVE_STRCASESTR])
HAVE_DECL_STRTOK_R=1; AC_SUBST([HAVE_DECL_STRTOK_R])
HAVE_DECL_STRERROR_R=1; AC_SUBST([HAVE_DECL_STRERROR_R])
HAVE_STRERRORNAME_NP=1; AC_SUBST([HAVE_STRERRORNAME_NP])
HAVE_SIGABBREV_NP=1; AC_SUBST([HAVE_SIGABBREV_NP])
HAVE_SIGDESCR_NP=1; AC_SUBST([HAVE_SIGDESCR_NP])
HAVE_DECL_STRSIGNAL=1; AC_SUBST([HAVE_DECL_STRSIGNAL])
@ -121,6 +123,7 @@ AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
REPLACE_STRTOK_R=0; AC_SUBST([REPLACE_STRTOK_R])
REPLACE_STRERROR=0; AC_SUBST([REPLACE_STRERROR])
REPLACE_STRERROR_R=0; AC_SUBST([REPLACE_STRERROR_R])
REPLACE_STRERRORNAME_NP=0; AC_SUBST([REPLACE_STRERRORNAME_NP])
REPLACE_STRSIGNAL=0; AC_SUBST([REPLACE_STRSIGNAL])
UNDEFINE_STRTOK_R=0; AC_SUBST([UNDEFINE_STRTOK_R])
])

14
m4/time_rz.m4
View file

@ -13,12 +13,12 @@ AC_DEFUN([gl_TIME_RZ],
AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
AC_REQUIRE([AC_STRUCT_TIMEZONE])
# Mac OS X 10.6 loops forever with some time_t values.
# On Mac OS X 10.6, localtime loops forever with some time_t values.
# See Bug#27706, Bug#27736, and
# https://lists.gnu.org/r/bug-gnulib/2017-07/msg00142.html
AC_CACHE_CHECK([whether localtime loops forever near extrema],
[gl_cv_func_localtime_infloop_bug],
[gl_cv_func_localtime_infloop_bug=no
AC_CACHE_CHECK([whether localtime works even near extrema],
[gl_cv_func_localtime_works],
[gl_cv_func_localtime_works=yes
AC_RUN_IFELSE(
[AC_LANG_PROGRAM(
[[#include <stdlib.h>
@ -37,10 +37,10 @@ AC_DEFUN([gl_TIME_RZ],
return tm && tm->tm_isdst;
]])],
[(TZ=QQQ0 ./conftest$EXEEXT) >/dev/null 2>&1 ||
gl_cv_func_localtime_infloop_bug=yes],
gl_cv_func_localtime_works=no],
[],
[gl_cv_func_localtime_infloop_bug="guessing no"])])
if test "$gl_cv_func_localtime_infloop_bug" = yes; then
[gl_cv_func_localtime_works="guessing yes"])])
if test "$gl_cv_func_localtime_works" = no; then
AC_DEFINE([HAVE_LOCALTIME_INFLOOP_BUG], 1,
[Define if localtime-like functions can loop forever on
extreme arguments.])