1 // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2 
3 // UNSUPPORTED: ios
4 
5 #include <stdint.h>
6 #include <stdio.h>
7 #include <errno.h>
8 #include <sys/mman.h>
9 
10 #if defined(__FreeBSD__)
11 // The MAP_NORESERVE define has been removed in FreeBSD 11.x, and even before
12 // that, it was never implemented.  So just define it to zero.
13 #undef  MAP_NORESERVE
14 #define MAP_NORESERVE 0
15 #endif
16 
17 int main() {
18 #ifdef __x86_64__
19   const size_t kLog2Size = 39;
20 #elif defined(__mips64) || defined(__aarch64__)
21   const size_t kLog2Size = 32;
22 #elif defined(__powerpc64__)
23   const size_t kLog2Size = 39;
24 #elif defined(__s390x__)
25   const size_t kLog2Size = 43;
26 #endif
27   const uintptr_t kLocation = 0x40ULL << kLog2Size;
28   void *p = mmap(
29       reinterpret_cast<void*>(kLocation),
30       1ULL << kLog2Size,
31       PROT_READ|PROT_WRITE,
32       MAP_PRIVATE|MAP_ANON|MAP_NORESERVE,
33       -1, 0);
34   fprintf(stderr, "DONE %p %d\n", p, errno);
35   return p == MAP_FAILED;
36 }
37 
38 // CHECK: DONE
39