[PATCH] D24575: [compiler-rt] Set asan win 64-bits to use dynamic address for memory allocator

[Etienne Bergeron via llvm-commits]

etienneb created this revision.
etienneb added a reviewer: rnk.
etienneb added subscribers: chrisha, llvm-commits.
Herald added subscribers: dberris, kubabrecka.

ASAN on Windows 64-bits should use a dynamic address instead of a fixed one.
The asan-allocator code to support dynamic address is already landed.
This patch is turning on the feature.

https://reviews.llvm.org/D24575

Files:
  lib/asan/asan_allocator.h

Index: lib/asan/asan_allocator.h
===================================================================
--- lib/asan/asan_allocator.h
+++ lib/asan/asan_allocator.h
@@ -130,6 +130,9 @@
 const uptr kAllocatorSpace =  0x10000000000ULL;
 const uptr kAllocatorSize  =  0x10000000000ULL;  // 3T.
 typedef DefaultSizeClassMap SizeClassMap;
+# elif SANITIZER_WINDOWS
+const uptr kAllocatorSpace = ~(uptr)0;
+const uptr kAllocatorSize  =  0x8000000000ULL;  // 500G
 # else
 const uptr kAllocatorSpace = 0x600000000000ULL;
 const uptr kAllocatorSize  =  0x40000000000ULL;  // 4T.


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