Index: compiler-rt/trunk/lib/asan/asan_malloc_win.cc
===================================================================
--- compiler-rt/trunk/lib/asan/asan_malloc_win.cc
+++ compiler-rt/trunk/lib/asan/asan_malloc_win.cc
@@ -125,7 +125,7 @@
 }
 
 ALLOCATION_FUNCTION_ATTRIBUTE
-size_t _msize(const void *ptr) {
+size_t _msize(void *ptr) {
   GET_CURRENT_PC_BP_SP;
   (void)sp;
   return asan_malloc_usable_size(ptr, pc, bp);