From 92565b51aa25b7a15bcdfb628bc616866af194fb Mon Sep 17 00:00:00 2001
From: Kaelyn Takata <rikka@google.com>
Date: Fri, 27 Mar 2015 01:44:47 +0000
Subject: [PATCH] Diagnose delayed typos in an expr list that is in an invalid
 expression.

Previously, if the expr list parsed fine but the expr to the left of the
open parenthesis was invalid (when parsing the suffix of a
postfix-expression), the parsed expr list was just ignored.

Fixes PR23005.

llvm-svn: 233347
---
 clang/lib/Parse/ParseExpr.cpp                  | 3 +++
 clang/test/SemaCXX/typo-correction-delayed.cpp | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index b9127e90457a..72af14d068f2 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -1459,6 +1459,9 @@ Parser::ParsePostfixExpressionSuffix(ExprResult LHS) {
              })) {
             (void)Actions.CorrectDelayedTyposInExpr(LHS);
             LHS = ExprError();
+          } else if (LHS.isInvalid()) {
+            for (auto &E : ArgExprs)
+              Actions.CorrectDelayedTyposInExpr(E);
           }
         }
       }
diff --git a/clang/test/SemaCXX/typo-correction-delayed.cpp b/clang/test/SemaCXX/typo-correction-delayed.cpp
index 64e6dd5966a2..3866a8a4cb72 100644
--- a/clang/test/SemaCXX/typo-correction-delayed.cpp
+++ b/clang/test/SemaCXX/typo-correction-delayed.cpp
@@ -193,3 +193,8 @@ void f() {
   TimeTicks::now();  // expected-error {{no member named 'now' in 'PR22297::TimeTicks'; did you mean 'Now'?}}
 }
 }
+
+namespace PR23005 {
+void f() { int a = Unknown::b(c); }  // expected-error {{use of undeclared identifier 'Unknown'}}
+// expected-error@-1 {{use of undeclared identifier 'c'}}
+}