| // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
| |
| // UNSUPPORTED: ios |
| |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <sys/mman.h> |
| |
| #if defined(__FreeBSD__) |
| // The MAP_NORESERVE define has been removed in FreeBSD 11.x, and even before |
| // that, it was never implemented. So just define it to zero. |
| #undef MAP_NORESERVE |
| #define MAP_NORESERVE 0 |
| #endif |
| |
| int main() { |
| #ifdef __x86_64__ |
| const size_t kLog2Size = 39; |
| #elif defined(__mips64) || defined(__aarch64__) |
| const size_t kLog2Size = 32; |
| #elif defined(__powerpc64__) |
| const size_t kLog2Size = 39; |
| #elif defined(__s390x__) |
| const size_t kLog2Size = 43; |
| #endif |
| const uintptr_t kLocation = 0x40ULL << kLog2Size; |
| void *p = mmap( |
| reinterpret_cast<void*>(kLocation), |
| 1ULL << kLog2Size, |
| PROT_READ|PROT_WRITE, |
| MAP_PRIVATE|MAP_ANON|MAP_NORESERVE, |
| -1, 0); |
| fprintf(stderr, "DONE %p %d\n", p, errno); |
| return p == MAP_FAILED; |
| } |
| |
| // CHECK: DONE |
