t-types.c revision 182352 
1/*
2 * Copyright (c) 2000-2002 Sendmail, Inc. and its suppliers.
3 *	All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 */
9
10#include <sm/gen.h>
11SM_IDSTR(id, "@(#)$Id: t-types.c,v 1.18 2002/03/13 17:29:53 gshapiro Exp $")
12
13#include <sm/limits.h>
14#include <sm/io.h>
15#include <sm/string.h>
16#include <sm/test.h>
17#include <sm/types.h>
18
19int
20main(argc, argv)
21	int argc;
22	char **argv;
23{
24	LONGLONG_T ll;
25	LONGLONG_T volatile lt;
26	ULONGLONG_T ull;
27	char buf[128];
28	char *r;
29
30	sm_test_begin(argc, argv, "test standard integral types");
31
32	SM_TEST(sizeof(LONGLONG_T) == sizeof(ULONGLONG_T));
33
34	/*
35	**  sendmail assumes that ino_t, off_t and void* can be cast
36	**  to ULONGLONG_T without losing information.
37	*/
38
39	if (!SM_TEST(sizeof(ino_t) <= sizeof(ULONGLONG_T)) ||
40	    !SM_TEST(sizeof(off_t) <= sizeof(ULONGLONG_T)) ||
41	    !SM_TEST(sizeof(void*) <= sizeof(ULONGLONG_T)))
42	{
43		(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT, "\
44Your C compiler appears to support a 64 bit integral type,\n\
45but libsm is not configured to use it.  You will need to set\n\
46either SM_CONF_LONGLONG or SM_CONF_QUAD_T to 1.  See libsm/README\n\
47for more details.\n");
48	}
49
50	/*
51	**  Most compilers notice that LLONG_MIN - 1 generate an underflow.
52	**  Some compiler generate code that will use the 'X' status bit
53	**  in a CPU and hence (LLONG_MIN - 1 > LLONG_MIN) will be false.
54	**  So we have to decide whether we want compiler warnings or
55	**  a wrong test...
56	**  Question: where do we really need what this test tests?
57	*/
58
59#if SM_CONF_TEST_LLONG
60	ll = LLONG_MIN;
61	(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT, "\
62Your C compiler maybe issued a warning during compilation,\n\
63please IGNORE the compiler warning!.\n");
64	lt = LLONG_MIN - 1;
65	SM_TEST(lt > ll);
66	sm_snprintf(buf, sizeof(buf), "%llx", ll);
67	r = "0";
68	if (!SM_TEST(buf[0] == '8')
69	    || !SM_TEST(strspn(&buf[1], r) == sizeof(ll) * 2 - 1))
70	{
71		(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
72			"oops: LLONG_MIN=%s\n", buf);
73	}
74
75	ll = LLONG_MAX;
76	lt = ll + 1;
77	SM_TEST(lt < ll);
78	sm_snprintf(buf, sizeof(buf), "%llx", ll);
79	r = "f";
80	if (!SM_TEST(buf[0] == '7')
81	    || !SM_TEST(strspn(&buf[1], r) == sizeof(ll) * 2 - 1))
82	{
83		(void) sm_io_fprintf(smioerr, SM_TIME_DEFAULT,
84			"oops: LLONG_MAX=%s\n", buf);
85	}
86#endif /* SM_CONF_TEST_LLONG */
87
88	ull = ULLONG_MAX;
89	SM_TEST(ull + 1 == 0);
90	sm_snprintf(buf, sizeof(buf), "%llx", ull);
91	r = "f";
92	SM_TEST(strspn(buf, r) == sizeof(ll) * 2);
93
94	/*
95	**  If QUAD_MAX is defined by <limits.h> then quad_t is defined.
96	**  Make sure LONGLONG_T is at least as big as quad_t.
97	*/
98#ifdef QUAD_MAX
99	SM_TEST(QUAD_MAX <= LLONG_MAX);
100#endif
101
102	return sm_test_end();
103}
104