Re: compiler-rt-git: Implement GetMaxVirtualAddress() for NetBSD/amd64

[maya%netbsd.org@localhost]

On Tue, Jul 04, 2017 at 04:14:37PM +0000, Kamil Rytarowski wrote:
> +--- lib/sanitizer_common/sanitizer_posix.cc.orig	2017-07-03 15:33:07.000000000 +0000
> ++++ lib/sanitizer_common/sanitizer_posix.cc
> +@@ -90,7 +90,9 @@ static uptr GetKernelAreaSize() {
> + 
> + uptr GetMaxVirtualAddress() {
> + #if SANITIZER_WORDSIZE == 64
> +-# if defined(__aarch64__) && SANITIZER_IOS && !SANITIZER_IOSSIM
> ++# if SANITIZER_NETBSD && defined(__x86_64__)
> ++  return 0x7f7ffffff000ULL;  // (0x00007f8000000000 - PAGE_SIZE)
> ++# elif defined(__aarch64__) && SANITIZER_IOS && !SANITIZER_IOSSIM
> +   // Ideally, we would derive the upper bound from MACH_VM_MAX_ADDRESS. The
> +   // upper bound can change depending on the device.
> +   return 0x200000000 - 1;

Why not use the macro from machine/vmparam.h?