From: David Blaikie <dblaikie@gmail.com>
Date: Tue, 14 May 2013 00:35:19 +0000 (+0000)
Subject: Assert that DIEEntries are constructed with non-null DIEs
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=17a692e7f196c15118e69d7012d110aa00a362ba;p=oota-llvm.git

Assert that DIEEntries are constructed with non-null DIEs

This just brings a crash a little further forward from DWARF emission to
DIE construction to make errors easier to diagnose.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181748 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/AsmPrinter/DIE.h b/lib/CodeGen/AsmPrinter/DIE.h
index 3c06001686f..d8fa1f5a0e7 100644
--- a/lib/CodeGen/AsmPrinter/DIE.h
+++ b/lib/CodeGen/AsmPrinter/DIE.h
@@ -325,7 +325,9 @@ namespace llvm {
   class DIEEntry : public DIEValue {
     DIE *const Entry;
   public:
-    explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {}
+    explicit DIEEntry(DIE *E) : DIEValue(isEntry), Entry(E) {
+      assert(E && "Cannot construct a DIEEntry with a null DIE");
+    }
 
     DIE *getEntry() const { return Entry; }