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-rw-r--r--lib/limits.in.h106
1 files changed, 77 insertions, 29 deletions
diff --git a/lib/limits.in.h b/lib/limits.in.h
index aa886e5d..b77bf75c 100644
--- a/lib/limits.in.h
+++ b/lib/limits.in.h
@@ -1,51 +1,75 @@
/* A GNU-like <limits.h>.
- Copyright 2016-2018 Free Software Foundation, Inc.
+ Copyright 2016-2022 Free Software Foundation, Inc.
- This program is free software: you can redistribute it and/or
- modify it under the terms of either:
+ This file 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 Lesser General Public License as published by the Free
- Software Foundation; either version 3 of the License, or (at your
- option) any later version.
-
- or
-
- * the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version.
-
- or both in parallel, as here.
- This program is distributed in the hope that it will be useful,
+ This file 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 this program; if not, see <https://www.gnu.org/licenses/>. */
-
-#ifndef _@GUARD_PREFIX@_LIMITS_H
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
-/* The include_next requires a split double-inclusion guard. */
+#if defined _GL_ALREADY_INCLUDING_LIMITS_H
+/* Special invocation convention:
+ On Haiku/x86_64, we have a sequence of nested includes
+ <limits.h> -> <syslimits.h> -> <limits.h>.
+ In this situation, LONG_MAX and INT_MAX are not yet defined,
+ therefore we should not attempt to define LONG_BIT. */
+
#@INCLUDE_NEXT@ @NEXT_LIMITS_H@
+#else
+/* Normal invocation convention. */
+
+#ifndef _@GUARD_PREFIX@_LIMITS_H
+
+# define _GL_ALREADY_INCLUDING_LIMITS_H
+
+/* The include_next requires a split double-inclusion guard. */
+# @INCLUDE_NEXT@ @NEXT_LIMITS_H@
+
+# undef _GL_ALREADY_INCLUDING_LIMITS_H
+
#ifndef _@GUARD_PREFIX@_LIMITS_H
#define _@GUARD_PREFIX@_LIMITS_H
-/* For HP-UX 11.31. */
-#if defined LONG_LONG_MIN && !defined LLONG_MIN
-# define LLONG_MIN LONG_LONG_MIN
+#ifndef LLONG_MIN
+# if defined LONG_LONG_MIN /* HP-UX 11.31 */
+# define LLONG_MIN LONG_LONG_MIN
+# elif defined LONGLONG_MIN /* IRIX 6.5 */
+# define LLONG_MIN LONGLONG_MIN
+# elif defined __GNUC__
+# define LLONG_MIN (- __LONG_LONG_MAX__ - 1LL)
+# endif
#endif
-#if defined LONG_LONG_MAX && !defined LLONG_MAX
-# define LLONG_MAX LONG_LONG_MAX
+#ifndef LLONG_MAX
+# if defined LONG_LONG_MAX /* HP-UX 11.31 */
+# define LLONG_MAX LONG_LONG_MAX
+# elif defined LONGLONG_MAX /* IRIX 6.5 */
+# define LLONG_MAX LONGLONG_MAX
+# elif defined __GNUC__
+# define LLONG_MAX __LONG_LONG_MAX__
+# endif
#endif
-#if defined ULONG_LONG_MAX && !defined ULLONG_MAX
-# define ULLONG_MAX ULONG_LONG_MAX
+#ifndef ULLONG_MAX
+# if defined ULONG_LONG_MAX /* HP-UX 11.31 */
+# define ULLONG_MAX ULONG_LONG_MAX
+# elif defined ULONGLONG_MAX /* IRIX 6.5 */
+# define ULLONG_MAX ULONGLONG_MAX
+# elif defined __GNUC__
+# define ULLONG_MAX (__LONG_LONG_MAX__ * 2ULL + 1ULL)
+# endif
#endif
/* The number of usable bits in an unsigned or signed integer type
@@ -62,10 +86,24 @@
#define _GL_COB8(n) (_GL_COB4 ((n) >> 4) + _GL_COB4 (n))
#define _GL_COB4(n) (!!((n) & 8) + !!((n) & 4) + !!((n) & 2) + !!((n) & 1))
-/* Macros specified by ISO/IEC TS 18661-1:2014. */
+#ifndef WORD_BIT
+/* Assume 'int' is 32 bits wide. */
+# define WORD_BIT 32
+#endif
+#ifndef LONG_BIT
+/* Assume 'long' is 32 or 64 bits wide. */
+# if LONG_MAX == INT_MAX
+# define LONG_BIT 32
+# else
+# define LONG_BIT 64
+# endif
+#endif
+
+/* Macros specified by C2x and by ISO/IEC TS 18661-1:2014. */
#if (! defined ULLONG_WIDTH \
- && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__))
+ && (defined _GNU_SOURCE || defined __STDC_WANT_IEC_60559_BFP_EXT__ \
+ || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
# define CHAR_WIDTH _GL_INTEGER_WIDTH (CHAR_MIN, CHAR_MAX)
# define SCHAR_WIDTH _GL_INTEGER_WIDTH (SCHAR_MIN, SCHAR_MAX)
# define UCHAR_WIDTH _GL_INTEGER_WIDTH (0, UCHAR_MAX)
@@ -77,7 +115,17 @@
# define ULONG_WIDTH _GL_INTEGER_WIDTH (0, ULONG_MAX)
# define LLONG_WIDTH _GL_INTEGER_WIDTH (LLONG_MIN, LLONG_MAX)
# define ULLONG_WIDTH _GL_INTEGER_WIDTH (0, ULLONG_MAX)
-#endif /* !ULLONG_WIDTH && (_GNU_SOURCE || __STDC_WANT_IEC_60559_BFP_EXT__) */
+#endif
+
+/* Macros specified by C2x. */
+
+#if (! defined BOOL_WIDTH \
+ && (defined _GNU_SOURCE \
+ || (defined __STDC_VERSION__ && 201710 < __STDC_VERSION__)))
+# define BOOL_MAX 1
+# define BOOL_WIDTH 1
+#endif
#endif /* _@GUARD_PREFIX@_LIMITS_H */
#endif /* _@GUARD_PREFIX@_LIMITS_H */
+#endif