1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
|
From: Tim Rühsen <tim.ruehsen@gmx.de>
Date: Wed, 1 Feb 2017 09:44:36 +0000 (+0100)
Subject: Update intprops.h for gcc-7 compatibility
X-Git-Url: http://git.savannah.gnu.org/gitweb/?p=libidn.git;a=commitdiff_plain;h=230930b3bc3e431b819eb45420cb42475d83ca93
Update intprops.h for gcc-7 compatibility
---
diff --git a/gl/intprops.h b/gl/intprops.h
index e1fce5c..eb06b69 100644
--- a/gl/intprops.h
+++ b/gl/intprops.h
@@ -1,18 +1,18 @@
/* 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. */
@@ -47,12 +47,16 @@
/* 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. */
@@ -65,7 +69,13 @@
? _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.
@@ -84,10 +94,15 @@ verify (TYPE_MAXIMUM (long int) == LONG_MAX);
verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
#endif
+/* Similarly, sanity-check one ISO/IEC TS 18661-1:2014 macro if defined. */
+#ifdef UINT_WIDTH
+verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
+#endif
/* 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
@@ -116,8 +131,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
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,
@@ -222,20 +236,23 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
? (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. */
+#define _GL_HAS_BUILTIN_OVERFLOW (5 <= __GNUC__)
+
+/* 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) \
@@ -315,7 +332,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
_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) \
@@ -349,10 +366,6 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
#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
@@ -369,7 +382,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
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) \
@@ -412,7 +425,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
# 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
diff --git a/lib/gltests/intprops.h b/lib/gltests/intprops.h
index e1fce5c..eb06b69 100644
--- a/lib/gltests/intprops.h
+++ b/lib/gltests/intprops.h
@@ -1,18 +1,18 @@
/* 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. */
@@ -47,12 +47,16 @@
/* 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. */
@@ -65,7 +69,13 @@
? _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.
@@ -84,10 +94,15 @@ verify (TYPE_MAXIMUM (long int) == LONG_MAX);
verify (TYPE_MINIMUM (long long int) == LLONG_MIN);
verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
#endif
+/* Similarly, sanity-check one ISO/IEC TS 18661-1:2014 macro if defined. */
+#ifdef UINT_WIDTH
+verify (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
+#endif
/* 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
@@ -116,8 +131,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
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,
@@ -222,20 +236,23 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
? (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. */
+#define _GL_HAS_BUILTIN_OVERFLOW (5 <= __GNUC__)
+
+/* 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) \
@@ -315,7 +332,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
_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) \
@@ -349,10 +366,6 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
#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
@@ -369,7 +382,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
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) \
@@ -412,7 +425,7 @@ verify (TYPE_MAXIMUM (long long int) == LLONG_MAX);
# 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
|
