Description: Update to latest intprops.h from gnulib, fixes FTBFS with gcc 7 Author: Adrian Bunk 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 . */ /* Written by Paul Eggert. */ @@ -23,7 +21,6 @@ #define _GL_INTPROPS_H #include -#include /* 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 - 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 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 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 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 */