Index: compiler-rt/lib/asan/asan_malloc_win.cc
===================================================================
--- compiler-rt/lib/asan/asan_malloc_win.cc
+++ compiler-rt/lib/asan/asan_malloc_win.cc
@@ -140,6 +140,11 @@
   return asan_malloc_usable_size(ptr, pc, bp);
 }
 
+ALLOCATION_FUNCTION_ATTRIBUTE
+size_t _msize_base(void *ptr) {
+  return _msize(ptr);
+}
+
 ALLOCATION_FUNCTION_ATTRIBUTE
 void *_expand(void *memblock, size_t size) {
   // _expand is used in realloc-like functions to resize the buffer if possible.
@@ -235,6 +240,7 @@
   TryToOverrideFunction("_recalloc_base", (uptr)_recalloc);
   TryToOverrideFunction("_recalloc_crt", (uptr)_recalloc);
   TryToOverrideFunction("_msize", (uptr)_msize);
+  TryToOverrideFunction("_msize_base", (uptr)_msize);
   TryToOverrideFunction("_expand", (uptr)_expand);
   TryToOverrideFunction("_expand_base", (uptr)_expand);
 
Index: compiler-rt/lib/asan/asan_win_dll_thunk.cc
===================================================================
--- compiler-rt/lib/asan/asan_win_dll_thunk.cc
+++ compiler-rt/lib/asan/asan_win_dll_thunk.cc
@@ -48,6 +48,7 @@
 INTERCEPT_WRAP_W_WWW(_recalloc_base)
 
 INTERCEPT_WRAP_W_W(_msize)
+INTERCEPT_WRAP_W_W(_msize_base)
 INTERCEPT_WRAP_W_W(_expand)
 INTERCEPT_WRAP_W_W(_expand_dbg)