[llvm] r181748 - Assert that DIEEntries are constructed with non-null DIEs

[David Blaikie]

Author: dblaikie
Date: Mon May 13 19:35:19 2013
New Revision: 181748

URL: http://llvm.org/viewvc/llvm-project?rev=181748&view=rev
Log:
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.

Modified:
    llvm/trunk/lib/CodeGen/AsmPrinter/DIE.h

Modified: llvm/trunk/lib/CodeGen/AsmPrinter/DIE.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/AsmPrinter/DIE.h?rev=181748&r1=181747&r2=181748&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/AsmPrinter/DIE.h (original)
+++ llvm/trunk/lib/CodeGen/AsmPrinter/DIE.h Mon May 13 19:35:19 2013
@@ -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; }