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Subject: [Bug other/55292] New: libsanitizer doesn't support x32
Date: Mon, 12 Nov 2012 20:44:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55292

             Bug #: 55292
           Summary: libsanitizer doesn't support x32
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com


sanitizer_common/sanitizer_linux.cc has

void *internal_mmap(void *addr, uptr length, int prot, int flags,
                    int fd, u64 offset) {
#if __WORDSIZE == 64
  return (void *)syscall(__NR_mmap, addr, length, prot, flags, fd, offset);
#else
  return (void *)syscall(__NR_mmap2, addr, length, prot, flags, fd, offset);
#endif
}

uptr internal_filesize(fd_t fd) {
#if __WORDSIZE == 64
  struct stat st;
  if (syscall(__NR_fstat, fd, &st))
    return -1;
#else
  struct stat64 st;
  if (syscall(__NR_fstat64, fd, &st))
    return -1;
#endif
  return (uptr)st.st_size;
}

They are incorrect for x32.