make block bodies handle undefined labels just like functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125799 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaExpr.cpp

@@ -8866,13 +8866,10 @@ ExprResult Sema::ActOnBlockStmtExpr(SourceLocation CaretLoc,
   if (getCurFunction()->NeedsScopeChecking() && !hasAnyErrorsInThisFunction())
     DiagnoseInvalidJumps(cast<CompoundStmt>(Body));
 
-  BSI->TheDecl->setBody(cast<CompoundStmt>(Body));
-
   // Check goto/label use.
-  if (BSI->checkLabelUse(0, *this)) {
-    PopFunctionOrBlockScope();
-    return ExprError();
-  }
+  BSI->checkLabelUse(Body, *this);
+  
+  BSI->TheDecl->setBody(cast<CompoundStmt>(Body));
 
   BlockExpr *Result = new (Context) BlockExpr(BSI->TheDecl, BlockTy);