mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-11 23:24:35 +00:00
258 lines
12 KiB
Diff
258 lines
12 KiB
Diff
Description: Update to latest intprops.h from gnulib, fixes FTBFS with gcc 7
|
|
Author: Adrian Bunk <bunk@debian.org>
|
|
Bug-Debian: https://bugs.debian.org/853649
|
|
|
|
--- rush-1.8+dfsg.orig/gnu/intprops.h
|
|
+++ rush-1.8+dfsg/gnu/intprops.h
|
|
@@ -1,20 +1,18 @@
|
|
-/* -*- buffer-read-only: t -*- vi: set ro: */
|
|
-/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
|
|
/* intprops.h -- properties of integer types
|
|
|
|
- Copyright (C) 2001-2016 Free Software Foundation, Inc.
|
|
+ Copyright (C) 2001-2017 Free Software Foundation, Inc.
|
|
|
|
This program is free software: you can redistribute it and/or modify it
|
|
- under the terms of the GNU General Public License as published
|
|
- by the Free Software Foundation; either version 3 of the License, or
|
|
+ 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.
|
|
|
|
This program 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 General Public License for more details.
|
|
+ GNU Lesser General Public License for more details.
|
|
|
|
- You should have received a copy of the GNU General Public License
|
|
+ You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Paul Eggert. */
|
|
@@ -23,7 +21,6 @@
|
|
#define _GL_INTPROPS_H
|
|
|
|
#include <limits.h>
|
|
-#include <verify.h>
|
|
|
|
/* Return a value with the common real type of E and V and the value of V. */
|
|
#define _GL_INT_CONVERT(e, v) (0 * (e) + (v))
|
|
@@ -49,12 +46,16 @@
|
|
|
|
/* Minimum and maximum values for integer types and expressions. */
|
|
|
|
+/* The width in bits of the integer type or expression T.
|
|
+ Padding bits are not supported; this is checked at compile-time below. */
|
|
+#define TYPE_WIDTH(t) (sizeof (t) * CHAR_BIT)
|
|
+
|
|
/* The maximum and minimum values for the integer type T. */
|
|
#define TYPE_MINIMUM(t) ((t) ~ TYPE_MAXIMUM (t))
|
|
#define TYPE_MAXIMUM(t) \
|
|
((t) (! TYPE_SIGNED (t) \
|
|
? (t) -1 \
|
|
- : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
|
|
+ : ((((t) 1 << (TYPE_WIDTH (t) - 2)) - 1) * 2 + 1)))
|
|
|
|
/* The maximum and minimum values for the type of the expression E,
|
|
after integer promotion. E should not have side effects. */
|
|
@@ -67,29 +68,23 @@
|
|
? _GL_SIGNED_INT_MAXIMUM (e) \
|
|
: _GL_INT_NEGATE_CONVERT (e, 1))
|
|
#define _GL_SIGNED_INT_MAXIMUM(e) \
|
|
- (((_GL_INT_CONVERT (e, 1) << (sizeof ((e) + 0) * CHAR_BIT - 2)) - 1) * 2 + 1)
|
|
+ (((_GL_INT_CONVERT (e, 1) << (TYPE_WIDTH ((e) + 0) - 2)) - 1) * 2 + 1)
|
|
+
|
|
+/* Work around OpenVMS incompatibility with C99. */
|
|
+#if !defined LLONG_MAX && defined __INT64_MAX
|
|
+# define LLONG_MAX __INT64_MAX
|
|
+# define LLONG_MIN __INT64_MIN
|
|
+#endif
|
|
|
|
/* This include file assumes that signed types are two's complement without
|
|
padding bits; the above macros have undefined behavior otherwise.
|
|
If this is a problem for you, please let us know how to fix it for your host.
|
|
- As a sanity check, test the assumption for some signed types that
|
|
- <limits.h> bounds. */
|
|
-verify (TYPE_MINIMUM (signed char) == SCHAR_MIN);
|
|
-verify (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
|
|
-verify (TYPE_MINIMUM (short int) == SHRT_MIN);
|
|
-verify (TYPE_MAXIMUM (short int) == SHRT_MAX);
|
|
-verify (TYPE_MINIMUM (int) == INT_MIN);
|
|
-verify (TYPE_MAXIMUM (int) == INT_MAX);
|
|
-verify (TYPE_MINIMUM (long int) == LONG_MIN);
|
|
-verify (TYPE_MAXIMUM (long int) == LONG_MAX);
|
|
-#ifdef LLONG_MAX
|
|
-verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
|
|
-verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
|
|
-#endif
|
|
+ This assumption is tested by the intprops-tests module. */
|
|
|
|
/* Does the __typeof__ keyword work? This could be done by
|
|
'configure', but for now it's easier to do it by hand. */
|
|
-#if (2 <= __GNUC__ || defined __IBM__TYPEOF__ \
|
|
+#if (2 <= __GNUC__ \
|
|
+ || (1210 <= __IBMC__ && defined __IBM__TYPEOF__) \
|
|
|| (0x5110 <= __SUNPRO_C && !__STDC__))
|
|
# define _GL_HAVE___TYPEOF__ 1
|
|
#else
|
|
@@ -118,8 +113,7 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
signed, this macro may overestimate the true bound by one byte when
|
|
applied to unsigned types of size 2, 4, 16, ... bytes. */
|
|
#define INT_STRLEN_BOUND(t) \
|
|
- (INT_BITS_STRLEN_BOUND (sizeof (t) * CHAR_BIT \
|
|
- - _GL_SIGNED_TYPE_OR_EXPR (t)) \
|
|
+ (INT_BITS_STRLEN_BOUND (TYPE_WIDTH (t) - _GL_SIGNED_TYPE_OR_EXPR (t)) \
|
|
+ _GL_SIGNED_TYPE_OR_EXPR (t))
|
|
|
|
/* Bound on buffer size needed to represent an integer type or expression T,
|
|
@@ -224,20 +218,27 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
? (a) < (min) >> (b) \
|
|
: (max) >> (b) < (a))
|
|
|
|
-/* True if __builtin_add_overflow (A, B, P) works when P is null. */
|
|
-#define _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL (7 <= __GNUC__)
|
|
+/* True if __builtin_add_overflow (A, B, P) works when P is non-null. */
|
|
+#if 5 <= __GNUC__ && !defined __ICC
|
|
+# define _GL_HAS_BUILTIN_OVERFLOW 1
|
|
+#else
|
|
+# define _GL_HAS_BUILTIN_OVERFLOW 0
|
|
+#endif
|
|
+
|
|
+/* True if __builtin_add_overflow_p (A, B, C) works. */
|
|
+#define _GL_HAS_BUILTIN_OVERFLOW_P (7 <= __GNUC__)
|
|
|
|
/* The _GL*_OVERFLOW macros have the same restrictions as the
|
|
*_RANGE_OVERFLOW macros, except that they do not assume that operands
|
|
(e.g., A and B) have the same type as MIN and MAX. Instead, they assume
|
|
that the result (e.g., A + B) has that type. */
|
|
-#if _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL
|
|
-# define _GL_ADD_OVERFLOW(a, b, min, max)
|
|
- __builtin_add_overflow (a, b, (__typeof__ ((a) + (b)) *) 0)
|
|
-# define _GL_SUBTRACT_OVERFLOW(a, b, min, max)
|
|
- __builtin_sub_overflow (a, b, (__typeof__ ((a) - (b)) *) 0)
|
|
-# define _GL_MULTIPLY_OVERFLOW(a, b, min, max)
|
|
- __builtin_mul_overflow (a, b, (__typeof__ ((a) * (b)) *) 0)
|
|
+#if _GL_HAS_BUILTIN_OVERFLOW_P
|
|
+# define _GL_ADD_OVERFLOW(a, b, min, max) \
|
|
+ __builtin_add_overflow_p (a, b, (__typeof__ ((a) + (b))) 0)
|
|
+# define _GL_SUBTRACT_OVERFLOW(a, b, min, max) \
|
|
+ __builtin_sub_overflow_p (a, b, (__typeof__ ((a) - (b))) 0)
|
|
+# define _GL_MULTIPLY_OVERFLOW(a, b, min, max) \
|
|
+ __builtin_mul_overflow_p (a, b, (__typeof__ ((a) * (b))) 0)
|
|
#else
|
|
# define _GL_ADD_OVERFLOW(a, b, min, max) \
|
|
((min) < 0 ? INT_ADD_RANGE_OVERFLOW (a, b, min, max) \
|
|
@@ -317,7 +318,7 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
_GL_BINARY_OP_OVERFLOW (a, b, _GL_ADD_OVERFLOW)
|
|
#define INT_SUBTRACT_OVERFLOW(a, b) \
|
|
_GL_BINARY_OP_OVERFLOW (a, b, _GL_SUBTRACT_OVERFLOW)
|
|
-#if _GL_HAS_BUILTIN_OVERFLOW_WITH_NULL
|
|
+#if _GL_HAS_BUILTIN_OVERFLOW_P
|
|
# define INT_NEGATE_OVERFLOW(a) INT_SUBTRACT_OVERFLOW (0, a)
|
|
#else
|
|
# define INT_NEGATE_OVERFLOW(a) \
|
|
@@ -351,10 +352,6 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
#define INT_MULTIPLY_WRAPV(a, b, r) \
|
|
_GL_INT_OP_WRAPV (a, b, r, *, __builtin_mul_overflow, INT_MULTIPLY_OVERFLOW)
|
|
|
|
-#ifndef __has_builtin
|
|
-# define __has_builtin(x) 0
|
|
-#endif
|
|
-
|
|
/* Nonzero if this compiler has GCC bug 68193 or Clang bug 25390. See:
|
|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
|
|
https://llvm.org/bugs/show_bug.cgi?id=25390
|
|
@@ -371,17 +368,17 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
the operation. BUILTIN is the builtin operation, and OVERFLOW the
|
|
overflow predicate. Return 1 if the result overflows. See above
|
|
for restrictions. */
|
|
-#if 5 <= __GNUC__ || __has_builtin (__builtin_add_overflow)
|
|
+#if _GL_HAS_BUILTIN_OVERFLOW
|
|
# define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) builtin (a, b, r)
|
|
#elif 201112 <= __STDC_VERSION__ && !_GL__GENERIC_BOGUS
|
|
# define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) \
|
|
(_Generic \
|
|
(*(r), \
|
|
signed char: \
|
|
- _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned char, \
|
|
+ _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
signed char, SCHAR_MIN, SCHAR_MAX), \
|
|
short int: \
|
|
- _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned short int, \
|
|
+ _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
short int, SHRT_MIN, SHRT_MAX), \
|
|
int: \
|
|
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
@@ -395,10 +392,10 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
#else
|
|
# define _GL_INT_OP_WRAPV(a, b, r, op, builtin, overflow) \
|
|
(sizeof *(r) == sizeof (signed char) \
|
|
- ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned char, \
|
|
+ ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
signed char, SCHAR_MIN, SCHAR_MAX) \
|
|
: sizeof *(r) == sizeof (short int) \
|
|
- ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned short int, \
|
|
+ ? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
short int, SHRT_MIN, SHRT_MAX) \
|
|
: sizeof *(r) == sizeof (int) \
|
|
? _GL_INT_OP_CALC (a, b, r, op, overflow, unsigned int, \
|
|
@@ -414,15 +411,14 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
# else
|
|
# define _GL_INT_OP_WRAPV_LONGISH(a, b, r, op, overflow) \
|
|
_GL_INT_OP_CALC (a, b, r, op, overflow, unsigned long int, \
|
|
- long int, LONG_MIN, LONG_MAX))
|
|
+ long int, LONG_MIN, LONG_MAX)
|
|
# endif
|
|
#endif
|
|
|
|
/* Store the low-order bits of A <op> B into *R, where the operation
|
|
is given by OP. Use the unsigned type UT for calculation to avoid
|
|
- overflow problems. *R's type is T, with extremal values TMIN and
|
|
- TMAX. T must be a signed integer type. Return 1 if the result
|
|
- overflows. */
|
|
+ overflow problems. *R's type is T, with extrema TMIN and TMAX.
|
|
+ T must be a signed integer type. Return 1 if the result overflows. */
|
|
#define _GL_INT_OP_CALC(a, b, r, op, overflow, ut, t, tmin, tmax) \
|
|
(sizeof ((a) op (b)) < sizeof (t) \
|
|
? _GL_INT_OP_CALC1 ((t) (a), (t) (b), r, op, overflow, ut, t, tmin, tmax) \
|
|
@@ -431,17 +427,27 @@ verify (TYPE_MAXIMUM (long long int) ==
|
|
((overflow (a, b) \
|
|
|| (EXPR_SIGNED ((a) op (b)) && ((a) op (b)) < (tmin)) \
|
|
|| (tmax) < ((a) op (b))) \
|
|
- ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t, tmin, tmax), 1) \
|
|
- : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t, tmin, tmax), 0))
|
|
+ ? (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 1) \
|
|
+ : (*(r) = _GL_INT_OP_WRAPV_VIA_UNSIGNED (a, b, op, ut, t), 0))
|
|
+
|
|
+/* Return the low-order bits of A <op> B, where the operation is given
|
|
+ by OP. Use the unsigned type UT for calculation to avoid undefined
|
|
+ behavior on signed integer overflow, and convert the result to type T.
|
|
+ UT is at least as wide as T and is no narrower than unsigned int,
|
|
+ T is two's complement, and there is no padding or trap representations.
|
|
+ Assume that converting UT to T yields the low-order bits, as is
|
|
+ done in all known two's-complement C compilers. E.g., see:
|
|
+ https://gcc.gnu.org/onlinedocs/gcc/Integers-implementation.html
|
|
+
|
|
+ According to the C standard, converting UT to T yields an
|
|
+ implementation-defined result or signal for values outside T's
|
|
+ range. However, code that works around this theoretical problem
|
|
+ runs afoul of a compiler bug in Oracle Studio 12.3 x86. See:
|
|
+ http://lists.gnu.org/archive/html/bug-gnulib/2017-04/msg00049.html
|
|
+ As the compiler bug is real, don't try to work around the
|
|
+ theoretical problem. */
|
|
|
|
-/* Return A <op> B, where the operation is given by OP. Use the
|
|
- unsigned type UT for calculation to avoid overflow problems.
|
|
- Convert the result to type T without overflow by subtracting TMIN
|
|
- from large values before converting, and adding it afterwards.
|
|
- Compilers can optimize all the operations except OP. */
|
|
-#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t, tmin, tmax) \
|
|
- (((ut) (a) op (ut) (b)) <= (tmax) \
|
|
- ? (t) ((ut) (a) op (ut) (b)) \
|
|
- : ((t) (((ut) (a) op (ut) (b)) - (tmin)) + (tmin)))
|
|
+#define _GL_INT_OP_WRAPV_VIA_UNSIGNED(a, b, op, ut, t) \
|
|
+ ((t) ((ut) (a) op (ut) (b)))
|
|
|
|
#endif /* _GL_INTPROPS_H */
|