tests/netbsd_printf.c

   1 /* $NetBSD: t_printf.c,v 1.8 2012/04/11 16:21:42 jruoho Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2010 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/types.h>
  30 #include <sys/resource.h>
  31 #include <math.h>
  32 #include <stdio.h>
  33 #include <stdint.h>
  34 #include <string.h>
  35 #include <time.h>
  36 #include <stdlib.h>
  37
  38 #include "darwintest.h"
  39
  40 T_DECL(netbsd_snprintf_c99, "Test printf(3) C99 conformance (PR lib/22019)")
  41 {
  42         char s[4];
  43
  44         (void)memset(s, '\0', sizeof(s));
  45         (void)snprintf(s, sizeof(s), "%#.o", 0);
  46         (void)printf("printf = %#.o\n", 0);
  47         (void)fprintf(stderr, "snprintf = %s", s);
  48
  49         T_ASSERT_EQ(strlen(s), (size_t)1, NULL);
  50         T_ASSERT_EQ(s[0], '0', NULL);
  51 }
  52
  53 T_DECL(netbsd_snprintf_dotzero, "PR lib/32951: %%.0f formats (0.0,0.5] to \"0.\"")
  54 {
  55         char s[4];
  56
  57         T_WITH_ERRNO; T_EXPECT_EQ(snprintf(s, sizeof(s), "%.0f", 0.1), 1, NULL);
  58         T_EXPECT_EQ_STR(s, "0", NULL);
  59 }
  60
  61 T_DECL(netbsd_snprintf_float, "test that floating conversions don't leak memory")
  62 {
  63         union {
  64                 double d;
  65                 uint64_t bits;
  66         } u;
  67         uint32_t ul, uh;
  68         time_t now;
  69         char buf[1000];
  70         struct rlimit rl;
  71
  72         rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
  73         T_WITH_ERRNO; T_EXPECT_NE(setrlimit(RLIMIT_AS, &rl), -1, NULL);
  74         rl.rlim_cur = rl.rlim_max = 1 * 1024 * 1024;
  75         T_EXPECT_POSIX_SUCCESS(setrlimit(RLIMIT_DATA, &rl), NULL);
  76
  77         time(&now);
  78         srand((unsigned int)now);
  79         for (size_t i = 0; i < 10000; i++) {
  80                 ul = (uint32_t)rand();
  81                 uh = (uint32_t)rand();
  82                 u.bits = (uint64_t)uh << 32 | ul;
  83                 T_EXPECT_POSIX_SUCCESS(snprintf(buf, sizeof buf, " %.2f", u.d), NULL);
  84         }
  85 }
  86
  87 T_DECL(netbsd_sprintf_zeropad, "Test output format zero padding (PR lib/44113)")
  88 {
  89         char str[1024];
  90
  91         T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", 0.0), 10, NULL);
  92         T_EXPECT_EQ_STR(str, "000.000000", NULL);
  93
  94         /* ieeefp */
  95 #ifndef __vax__
  96         /* printf(3) should ignore zero padding for nan/inf */
  97         T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", NAN), 10, NULL);
  98         T_EXPECT_EQ_STR(str, "       nan", NULL);
  99         T_WITH_ERRNO; T_EXPECT_EQ(sprintf(str, "%010f", INFINITY), 10, NULL);
 100         T_EXPECT_EQ_STR(str, "       inf", NULL);
 101 #endif
 102 }