src/compiler-rt/test/tsan/mmap_large.cc

   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