diff --git a/include/clang/Parse/Action.h b/include/clang/Parse/Action.h
index 6b398f6..91854aa 100644
--- a/include/clang/Parse/Action.h
+++ b/include/clang/Parse/Action.h
@@ -459,6 +459,8 @@
   virtual DeclPtrTy ActOnParamDeclarator(Scope *S, Declarator &D) {
     return DeclPtrTy();
   }
+  virtual void ActOnObjCCatchParam(DeclPtrTy D) {
+  }
 
   /// AddInitializerToDecl - This action is called immediately after
   /// ActOnDeclarator (when an initializer is present). The code is factored
diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index ae85aa3..e837c76 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -1482,6 +1482,7 @@
           // Inform the actions module about the parameter declarator, so it
           // gets added to the current scope.
           FirstPart = Actions.ActOnParamDeclarator(CurScope, ParmDecl);
+          Actions.ActOnObjCCatchParam(FirstPart);
         } else
           ConsumeToken(); // consume '...'
 
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index d971b9c..b8831b4 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -676,6 +676,7 @@
                                 bool &OverloadableAttrRequired);
   void CheckMain(FunctionDecl *FD);
   virtual DeclPtrTy ActOnParamDeclarator(Scope *S, Declarator &D);
+  virtual void ActOnObjCCatchParam(DeclPtrTy D);
   virtual void ActOnParamDefaultArgument(DeclPtrTy param,
                                          SourceLocation EqualLoc,
                                          ExprArg defarg);
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index c604f6a..8c217f8 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -3934,6 +3934,19 @@
   return DeclPtrTy::make(New);
 }
 
+void Sema::ActOnObjCCatchParam(DeclPtrTy D) {
+  ParmVarDecl *Param = cast<ParmVarDecl>(D.getAs<Decl>());
+  
+  if (FunctionDecl *Function = dyn_cast<FunctionDecl>(CurContext))
+    Param->setDeclContext(Function);
+  else if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(CurContext))
+    Param->setDeclContext(MD);
+  else if (BlockDecl *BD = dyn_cast<BlockDecl>(CurContext))
+    Param->setDeclContext(BD);
+  // FIXME. Other contexts?
+  
+}
+
 void Sema::ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D,
                                            SourceLocation LocAfterDecls) {
   assert(D.getTypeObject(0).Kind == DeclaratorChunk::Function &&
diff --git a/test/CodeGenObjC/blocks-4.m b/test/CodeGenObjC/blocks-4.m
new file mode 100644
index 0000000..d945ed4
--- /dev/null
+++ b/test/CodeGenObjC/blocks-4.m
@@ -0,0 +1,21 @@
+// RUN: %clang_cc1 -triple i386-apple-darwin9 -emit-llvm -fblocks -o %t %s
+// rdar://7590273
+
+void EXIT(id e);
+
+@interface NSBlockOperation {
+}
++(id)blockOperationWithBlock:(void (^)(void))block ;
+@end
+
+void FUNC() {
+        [NSBlockOperation blockOperationWithBlock:^{
+            @try {
+
+            }
+            @catch (id exception) {
+		EXIT(exception);
+            }
+        }];
+
+}