Fix Sema::CorrectTypo to ignore found but unresolved symbols

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@139252 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 19 insertions, 2 deletions

diff --git a/lib/Sema/SemaLookup.cpp b/lib/Sema/SemaLookup.cpp
index c5dc144695..f11737b9f7 100644
--- a/lib/Sema/SemaLookup.cpp
+++ b/lib/Sema/SemaLookup.cpp
@@ -3691,6 +3691,7 @@ TypoCorrection Sema::CorrectTypo(const DeclarationNameInfo &TypoName,
       switch (TmpRes.getResultKind()) {
       case LookupResult::NotFound:
       case LookupResult::NotFoundInCurrentInstantiation:
+      case LookupResult::FoundUnresolvedValue:
         QualifiedResults.insert(Name);
         // We didn't find this name in our scope, or didn't like what we found;
         // ignore it.
@@ -3717,7 +3718,6 @@ TypoCorrection Sema::CorrectTypo(const DeclarationNameInfo &TypoName,
       }
 
       case LookupResult::Found:
-      case LookupResult::FoundUnresolvedValue:
         I->second.setCorrectionDecl(TmpRes.getAsSingle<NamedDecl>());
         ++I;
         break;
@@ -3754,7 +3754,6 @@ TypoCorrection Sema::CorrectTypo(const DeclarationNameInfo &TypoName,
 
           switch (TmpRes.getResultKind()) {
           case LookupResult::Found:
-          case LookupResult::FoundUnresolvedValue:
             Consumer.addName((*QRI)->getName(), TmpRes.getAsSingle<NamedDecl>(),
                              QualifiedED, NI->NameSpecifier);
             break;
@@ -3771,6 +3770,7 @@ TypoCorrection Sema::CorrectTypo(const DeclarationNameInfo &TypoName,
           case LookupResult::NotFound:
           case LookupResult::NotFoundInCurrentInstantiation:
           case LookupResult::Ambiguous:
+          case LookupResult::FoundUnresolvedValue:
             break;
           }
         }
diff --git a/test/SemaCXX/using-decl-templates.cpp b/test/SemaCXX/using-decl-templates.cpp
index 7b4da9d50d..2f8abca02d 100644
--- a/test/SemaCXX/using-decl-templates.cpp
+++ b/test/SemaCXX/using-decl-templates.cpp
@@ -63,3 +63,20 @@ template <class T> struct Bar : public Foo<T>, Baz {
 };
 template int Bar<int>::foo();
 }
+
+// PR10883
+namespace PR10883 {
+  template <typename T>
+  class Base {
+   public:
+    typedef long Container;
+  };
+
+  template <typename T>
+  class Derived : public Base<T> {
+   public:
+    using Base<T>::Container;
+
+    void foo(const Container& current); // expected-error {{unknown type name 'Container'}}
+  };
+}