From f6fe457f9483c614afde7c89f6ae414e476c84b2 Mon Sep 17 00:00:00 2001
From: Steve MacLean <sdmaclea@qti.qualcomm.com>
Date: Thu, 30 Mar 2017 22:06:23 -0400
Subject: [PATCH] Add assert to GCHeap::ValidateObjectMember
 (dotnet/coreclr#10591)

In presence of a corrupt heap, objects can contain
null method table.  Add assertion to prevent segfault
in checked/debug builds.

Commit migrated from https://github.com/dotnet/coreclr/commit/07fa3a32336d2da5d2bf652ad01d33f18b2debaf
---
 src/coreclr/src/gc/gc.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/coreclr/src/gc/gc.cpp b/src/coreclr/src/gc/gc.cpp
index 9435357..65c6742 100644
--- a/src/coreclr/src/gc/gc.cpp
+++ b/src/coreclr/src/gc/gc.cpp
@@ -33501,6 +33501,7 @@ void GCHeap::ValidateObjectMember (Object* obj)
                                     {
                                         dprintf (3, ("VOM: m: %Ix obj %Ix", (size_t)child_o, o));
                                         MethodTable *pMT = method_table (child_o);
+                                        assert(pMT);
                                         if (!pMT->SanityCheck()) {
                                             dprintf (3, ("Bad member of %Ix %Ix",
                                                         (size_t)oo, (size_t)child_o));
-- 
2.7.4