compiler-rt/test/tsan/mmap_large.cpp

   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     defined(__loongarch_lp64) || (defined(__riscv) && __riscv_xlen == 64)
  22   const size_t kLog2Size = 32;
  23 #elif defined(__powerpc64__)
  24   const size_t kLog2Size = 39;
  25 #elif defined(__s390x__)
  26   const size_t kLog2Size = 43;
  27 #endif
  28   const uintptr_t kLocation = 0x40ULL << kLog2Size;
  29   void *p = mmap(
  30       reinterpret_cast<void*>(kLocation),
  31       1ULL << kLog2Size,
  32       PROT_READ|PROT_WRITE,
  33       MAP_PRIVATE|MAP_ANON|MAP_NORESERVE,
  34       -1, 0);
  35   fprintf(stderr, "DONE %p %d\n", p, errno);
  36   return p == MAP_FAILED;
  37 }
  38
  39 // CHECK: DONE