Added decl_iterator to DeclStmt to provide an abstract interface to iterate over the ScopedDecls of a DeclStmt.
Updated a few clients of DeclStmt::getNextDeclarator() to use decl_iterator instead.  Will update other clients after additional testing.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@54368 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/CheckDeadStores.cpp b/lib/Analysis/CheckDeadStores.cpp
index f0d3dd1..38078e3 100644
--- a/lib/Analysis/CheckDeadStores.cpp
+++ b/lib/Analysis/CheckDeadStores.cpp
@@ -161,9 +161,10 @@
     else if (DeclStmt* DS = dyn_cast<DeclStmt>(S))
       // Iterate through the decls.  Warn if any initializers are complex
       // expressions that are not live (never used).
-      for (ScopedDecl* SD = DS->getDecl(); SD; SD = SD->getNextDeclarator()) {
+      for (DeclStmt::decl_iterator DI=DS->decl_begin(), DE=DS->decl_end();
+           DI != DE; ++DI) {
         
-        VarDecl* V = dyn_cast<VarDecl>(SD);
+        VarDecl* V = dyn_cast<VarDecl>(*DI);
 
         if (!V)
           continue;