Objective-C modern rewriter. Patch to fix a rewriting bug 
rewriting an Objective-C block. Patch by Ryan Govostes.
rdar://18799145 

llvm-svn: 220834
diff --git a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
index 3c48de2..bcfba22 100644
--- a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
+++ b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
@@ -5526,6 +5526,10 @@
                              VK_RValue, OK_Ordinary, SourceLocation());
   NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast,
                                     NewRep);
+  // Put Paren around the call.
+  NewRep = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+                                   NewRep);
+  
   BlockDeclRefs.clear();
   BlockByRefDecls.clear();
   BlockByRefDeclsPtrSet.clear();
diff --git a/clang/test/Rewriter/rewrite-block-literal.mm b/clang/test/Rewriter/rewrite-block-literal.mm
index 43f5811..cde6efc 100644
--- a/clang/test/Rewriter/rewrite-block-literal.mm
+++ b/clang/test/Rewriter/rewrite-block-literal.mm
@@ -70,7 +70,7 @@
 void (^global_block)(void) = ^{ printf("global x is %d\n", global_x); };
 
 // CHECK: static __global_block_block_impl_0 __global_global_block_block_impl_0((void *)__global_block_block_func_0, &__global_block_block_desc_0_DATA);
-// CHECK: void (*global_block)(void) = (void (*)())&__global_global_block_block_impl_0;
+// CHECK: void (*global_block)(void) = ((void (*)())&__global_global_block_block_impl_0);
 
 typedef void (^void_block_t)(void);
 
diff --git a/clang/test/Rewriter/rewrite-modern-block.mm b/clang/test/Rewriter/rewrite-modern-block.mm
index 2302965..926ee36 100644
--- a/clang/test/Rewriter/rewrite-modern-block.mm
+++ b/clang/test/Rewriter/rewrite-modern-block.mm
@@ -63,3 +63,6 @@
     options &= ~(1 | 2);
 }
 @end
+
+// rdar://18799145
+int Test18799145() { return ^(){return 0;}(); }
diff --git a/clang/test/Rewriter/rewrite-modern-captured-nested-bvar.mm b/clang/test/Rewriter/rewrite-modern-captured-nested-bvar.mm
index a8fd180..be7548c 100644
--- a/clang/test/Rewriter/rewrite-modern-captured-nested-bvar.mm
+++ b/clang/test/Rewriter/rewrite-modern-captured-nested-bvar.mm
@@ -32,4 +32,4 @@
 
 // CHECK 2: (__Block_byref_BYREF_VAR_CHECK_0 *)BYREF_VAR_CHECK
 // CHECK: {(void*)0,(__Block_byref_BYREF_VAR_CHECK_0 *)&BYREF_VAR_CHECK, 0, sizeof(__Block_byref_BYREF_VAR_CHECK_0), 'a'}
-// CHECK: __Block_byref_BYREF_VAR_CHECK_0 *)&BYREF_VAR_CHECK, (__Block_byref_d_1 *)&d, 570425344));
+// CHECK: __Block_byref_BYREF_VAR_CHECK_0 *)&BYREF_VAR_CHECK, (__Block_byref_d_1 *)&d, 570425344)));