[clang] Respect TerseOutput when printing lambdas

cfe/trunk/lib/AST/StmtPrinter.cpp

if (Node->hasExplicitParameters()) {
     if (Node->hasExplicitResultType()) {
       OS << " -> ";
       Proto->getReturnType().print(OS, Policy);
     }
   }
 
   // Print the body.
   OS << ' ';
+  if (Policy.TerseOutput)
+    OS << "{}";
+  else
     PrintRawCompoundStmt(Node->getBody());
 }
 
 void StmtPrinter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *Node) {
   if (TypeSourceInfo *TSInfo = Node->getTypeSourceInfo())
     TSInfo->getType().print(OS, Policy);
   else
     Node->getType().print(OS, Policy);
   OS << "()";

cfe/trunk/unittests/AST/StmtPrinterTest.cpp

ASSERT_TRUE(PrintedStmtObjCMatches(ObjCSource, returnStmt().bind("id"),
                                      "return ivar;\n",
                                      PolicyAdjusterType([](PrintingPolicy &PP) {
                                        PP.SuppressImplicitBase = true;
                                      })));
   // Print implicit 'self'.
   ASSERT_TRUE(PrintedStmtObjCMatches(ObjCSource, returnStmt().bind("id"),
                                      "return self->ivar;\n"));
 }
+
+TEST(StmtPrinter, TerseOutputWithLambdas) {
+  const char *CPPSource = "auto lamb = []{ return 0; };";
+
+  // body is printed when TerseOutput is off(default).
+  ASSERT_TRUE(PrintedStmtCXXMatches(StdVer::CXX11, CPPSource,
+                                    lambdaExpr(anything()).bind("id"),
+                                    "[] {\n    return 0;\n}"));
+
+  // body not printed when TerseOutput is on.
+  ASSERT_TRUE(PrintedStmtCXXMatches(
+      StdVer::CXX11, CPPSource, lambdaExpr(anything()).bind("id"), "[] {}",
+      PolicyAdjusterType([](PrintingPolicy &PP) { PP.TerseOutput = true; })));
+}