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-rw-r--r--JavaScriptCore/wtf/FastMalloc.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/JavaScriptCore/wtf/FastMalloc.cpp b/JavaScriptCore/wtf/FastMalloc.cpp
index 0f240ff..1e537b9 100644
--- a/JavaScriptCore/wtf/FastMalloc.cpp
+++ b/JavaScriptCore/wtf/FastMalloc.cpp
@@ -384,7 +384,8 @@ size_t fastMallocSize(const void* p)
{
#if OS(DARWIN)
return malloc_size(p);
-#elif COMPILER(MSVC)
+#elif COMPILER(MSVC) && !PLATFORM(BREWMP)
+ // Brew MP uses its own memory allocator, so _msize does not work on the Brew MP simulator.
return _msize(const_cast<void*>(p));
#else
return 1;