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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <cstddef>
     30 #if defined BIONIC && !defined BIONIC_LIBSTDCPP_INCLUDE_CSTDDEF__
     31 #error "Wrong header file included!!"
     32 #endif
     33 
     34 
     35 namespace {
     36 const int kPassed = 0;
     37 const int kFailed = 1;
     38 #define FAIL_UNLESS(f) if (!android::f()) return kFailed;
     39 }  // anonymous namespace
     40 
     41 namespace android {
     42 // Dummy struct used to calculate offset of some of its fields.
     43 struct Foo
     44 {
     45     char field1;
     46     char field2;
     47 };
     48 
     49 // Check various types are declared in the std namespace.
     50 bool testTypesStd()
     51 {
     52     // size_t should be defined in both namespaces
     53     volatile ::size_t size_t_in_top_ns = 0;
     54     volatile ::std::size_t size_t_in_std_ns = 0;
     55 
     56     if (sizeof(::size_t) != sizeof(::std::size_t))
     57     {
     58         return false;
     59     }
     60 
     61     // ptrdiff_t should be defined in both namespaces
     62     volatile ::ptrdiff_t ptrdiff_t_in_top_ns = 0;
     63     volatile ::std::ptrdiff_t ptrdiff_t_in_std_ns = 0;
     64 
     65     if (sizeof(::ptrdiff_t) != sizeof(::std::ptrdiff_t))
     66     {
     67         return false;
     68     }
     69     // NULL is only in the top namespace
     70     volatile int *null_is_defined = NULL;
     71     return true;
     72 }
     73 
     74 bool testOffsetOf()
     75 {
     76 #ifndef offsetof
     77 #error "offsetof is not a macro"
     78 #endif
     79 
     80     // offsetof is only in the top namespace
     81     volatile size_t offset = offsetof(struct Foo, field2);
     82     return offset == 1;
     83 }
     84 
     85 bool testNull()
     86 {
     87 #ifndef NULL
     88 #error "NULL is not a macro"
     89 #endif
     90     // If NULL is void* this will issue a warning.
     91     volatile int null_is_not_void_star = NULL;
     92     return true;
     93 }
     94 
     95 }  // android namespace
     96 
     97 int main(int argc, char **argv)
     98 {
     99     FAIL_UNLESS(testTypesStd);
    100     FAIL_UNLESS(testOffsetOf);
    101     FAIL_UNLESS(testNull);
    102     return kPassed;
    103 }
    104