src/test/test_ptr_slow.c

   1 /* Copyright (c) 2001-2004, Roger Dingledine.
   2  * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
   3  * Copyright (c) 2007-2019, The Tor Project, Inc. */
   4 /* See LICENSE for licensing information */
   5
   6 #include "orconfig.h"
   7 #include "core/or/or.h"
   8 #include "test/test.h"
   9
  10 #include <stdint.h>
  11 #include <limits.h>
  12
  13 /** Assert that <b>a</b> can be cast to void * and back. */
  14 static void
  15 assert_int_voidptr_roundtrip(int a)
  16 {
  17   intptr_t ap = (intptr_t)a;
  18   void *b = (void *)ap;
  19   intptr_t c = (intptr_t)b;
  20   void *d = (void *)c;
  21
  22   tt_assert(ap == c);
  23   tt_assert(b == d);
  24
  25  done:
  26   return;
  27 }
  28
  29 static void
  30 test_int_voidstar_interop(void *arg)
  31 {
  32   int a;
  33   (void)arg;
  34
  35   for (a = 0; a <= 1024; a++) {
  36     assert_int_voidptr_roundtrip(a);
  37   }
  38
  39   for (a = INT_MAX-1024; a < INT_MAX; a++) {
  40     assert_int_voidptr_roundtrip(a);
  41   }
  42 }
  43
  44 static void
  45 assert_uint_voidptr_roundtrip(unsigned int a)
  46 {
  47  intptr_t ap = (intptr_t)a;
  48  void *b = (void *)ap;
  49  intptr_t c = (intptr_t)b;
  50  void *d = (void *)c;
  51
  52  tt_assert(ap == c);
  53  tt_assert(b == d);
  54
  55  done:
  56   return;
  57 }
  58
  59 static void
  60 test_uint_voidstar_interop(void *arg)
  61 {
  62   unsigned int a;
  63   (void)arg;
  64
  65   for (a = 0; a <= 1024; a++) {
  66     assert_uint_voidptr_roundtrip(a);
  67   }
  68
  69   for (a = UINT_MAX-1024; a < UINT_MAX; a++) {
  70     assert_uint_voidptr_roundtrip(a);
  71   }
  72 }
  73
  74 struct testcase_t slow_ptr_tests[] = {
  75   { .name = "int_voidstar_interop",
  76     .fn = test_int_voidstar_interop,
  77     .flags = 0,
  78     .setup = NULL,
  79     .setup_data = NULL },
  80   { .name = "uint_voidstar_interop",
  81     .fn = test_uint_voidstar_interop,
  82     .flags = 0,
  83     .setup = NULL,
  84     .setup_data = NULL },
  85   END_OF_TESTCASES
  86 };