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