diff --git a/src/cgmemmgr.cpp b/src/cgmemmgr.cpp
index ee8ef948701369..5eb09fbc8cd977 100644
--- a/src/cgmemmgr.cpp
+++ b/src/cgmemmgr.cpp
@@ -59,7 +59,7 @@ static void *map_anon_page(size_t size)
 {
 #ifdef _OS_WINDOWS_
     char *mem = (char*)VirtualAlloc(NULL, size + jl_page_size,
-                                    MEM_RESERVE, PAGE_READWRITE);
+                                    MEM_COMMIT, PAGE_READWRITE);
     assert(mem);
     mem = (char*)LLT_ALIGN(uintptr_t(mem), jl_page_size);
 #else
@@ -800,6 +800,28 @@ class RTDyldMemoryManagerJL : public SectionMemoryManager {
         mapAddresses(Dyld, ro_alloc);
         mapAddresses(Dyld, exe_alloc);
     }
+#ifdef _OS_WINDOWS_
+    template <typename Alloc>
+    void *lookupWriteAddressFor(void *rt_addr, Alloc *allocator)
+    {
+        for (auto &alloc: allocator->allocations) {
+            if (alloc.rt_addr == rt_addr) {
+                return alloc.wr_addr;
+            }
+        }
+        return nullptr;
+    }
+    void *lookupWriteAddressFor(void *rt_addr)
+    {
+        if (!ro_alloc)
+            return rt_addr;
+        if (void *ptr = lookupWriteAddressFor(rt_addr, ro_alloc))
+            return ptr;
+        if (void *ptr = lookupWriteAddressFor(rt_addr, exe_alloc))
+            return ptr;
+        return rt_addr;
+    }
+#endif
 };
 
 uint8_t *RTDyldMemoryManagerJL::allocateCodeSection(uintptr_t Size,
@@ -883,6 +905,13 @@ void notifyObjectLoaded(RTDyldMemoryManager *memmgr,
 }
 #endif
 
+#ifdef _OS_WINDOWS_
+void *lookupWriteAddressFor(RTDyldMemoryManager *memmgr, void *rt_addr)
+{
+    return ((RTDyldMemoryManagerJL*)memmgr)->lookupWriteAddressFor(rt_addr);
+}
+#endif
+
 #else
 typedef SectionMemoryManager RTDyldMemoryManagerJL;
 #endif
diff --git a/src/codegen_internal.h b/src/codegen_internal.h
index f939edc118807a..47db6d841da35b 100644
--- a/src/codegen_internal.h
+++ b/src/codegen_internal.h
@@ -28,8 +28,12 @@ extern bool jl_dylib_DI_for_fptr(size_t pointer, const object::ObjectFile **obje
         bool onlySysImg, bool *isSysImg, void **saddr, char **name, char **filename);
 
 #ifdef USE_ORCJIT
-extern JL_DLLEXPORT void ORCNotifyObjectEmitted(JITEventListener *Listener,
-                                      const object::ObjectFile &obj,
-                                      const object::ObjectFile &debugObj,
-                                      const RuntimeDyld::LoadedObjectInfo &L);
+JL_DLLEXPORT void ORCNotifyObjectEmitted(JITEventListener *Listener,
+                                         const object::ObjectFile &obj,
+                                         const object::ObjectFile &debugObj,
+                                         const RuntimeDyld::LoadedObjectInfo &L,
+                                         RTDyldMemoryManager *memmgr);
+#ifdef _OS_WINDOWS_
+void *lookupWriteAddressFor(RTDyldMemoryManager *memmgr, void *rt_addr);
+#endif
 #endif
diff --git a/src/debuginfo.cpp b/src/debuginfo.cpp
index b9144a0e434071..ad93b7111fe600 100644
--- a/src/debuginfo.cpp
+++ b/src/debuginfo.cpp
@@ -298,12 +298,13 @@ class JuliaJITEventListener: public JITEventListener
     virtual void NotifyObjectEmitted(const object::ObjectFile &obj,
                                      const RuntimeDyld::LoadedObjectInfo &L)
     {
-        return _NotifyObjectEmitted(obj,obj,L);
+        return _NotifyObjectEmitted(obj,obj,L,nullptr);
     }
 
     virtual void _NotifyObjectEmitted(const object::ObjectFile &obj,
-                                     const object::ObjectFile &debugObj,
-                                     const RuntimeDyld::LoadedObjectInfo &L)
+                                      const object::ObjectFile &debugObj,
+                                      const RuntimeDyld::LoadedObjectInfo &L,
+                                      RTDyldMemoryManager *memmgr)
 #else
     virtual void NotifyObjectEmitted(const ObjectImage &obj)
 #endif
@@ -397,14 +398,20 @@ class JuliaJITEventListener: public JITEventListener
 #endif
                 Addr -= SectionAddr - SectionLoadAddr;
                 *pAddr = (uint8_t*)Addr;
-                if (SectionLoadOffset != 1)
-                    assert(SectionLoadOffset == SectionAddr - SectionLoadAddr);
-                else
-                    SectionLoadOffset = SectionAddr - SectionLoadAddr;
                 if (SectionAddrCheck)
                     assert(SectionAddrCheck == SectionLoadAddr);
                 else
                     SectionAddrCheck = SectionLoadAddr;
+#ifdef USE_ORCJIT
+                if (memmgr)
+                    SectionAddr =
+                        (uintptr_t)lookupWriteAddressFor(memmgr,
+                                                         (void*)SectionLoadAddr);
+#endif
+                if (SectionLoadOffset != 1)
+                    assert(SectionLoadOffset == SectionAddr - SectionLoadAddr);
+                else
+                    SectionLoadOffset = SectionAddr - SectionLoadAddr;
             }
         }
         assert(catchjmp);
@@ -613,9 +620,10 @@ class JuliaJITEventListener: public JITEventListener
 JL_DLLEXPORT void ORCNotifyObjectEmitted(JITEventListener *Listener,
                                          const object::ObjectFile &obj,
                                          const object::ObjectFile &debugObj,
-                                         const RuntimeDyld::LoadedObjectInfo &L)
+                                         const RuntimeDyld::LoadedObjectInfo &L,
+                                         RTDyldMemoryManager *memmgr)
 {
-    ((JuliaJITEventListener*)Listener)->_NotifyObjectEmitted(obj,debugObj,L);
+    ((JuliaJITEventListener*)Listener)->_NotifyObjectEmitted(obj,debugObj,L,memmgr);
 }
 #endif
 
diff --git a/src/jitlayers.cpp b/src/jitlayers.cpp
index af2c6e2df380f6..f7bf9073a000b0 100644
--- a/src/jitlayers.cpp
+++ b/src/jitlayers.cpp
@@ -266,7 +266,7 @@ class JuliaOJIT {
                 ORCNotifyObjectEmitted(JuliaListener.get(),
                         *Object,
                         *SavedObjects.back().getBinary(),
-                        *LO);
+                        *LO, JIT.MemMgr);
 
                 // record all of the exported symbols defined in this object
                 // in the primary hash table for the enclosing JIT