From 10318845f40d50b9d0ce010b0ea8d93a7b5ab029 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Fri, 1 Feb 2013 04:49:10 +0000
Subject: [PATCH] Don't do delayed exception-specification checking on an
 invalid class. Fixes <rdar://problem/13017229>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174145 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaDeclCXX.cpp            |  8 ++++++++
 test/CXX/except/except.spec/p14.cpp | 11 +++++++++++
 2 files changed, 19 insertions(+)

diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index 9ef91467da..ead7b6548b 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -7871,6 +7871,14 @@ void Sema::DefineImplicitDestructor(SourceLocation CurrentLocation,
 /// \brief Perform any semantic analysis which needs to be delayed until all
 /// pending class member declarations have been parsed.
 void Sema::ActOnFinishCXXMemberDecls() {
+  // If the context is an invalid C++ class, just suppress these checks.
+  if (CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(CurContext)) {
+    if (Record->isInvalidDecl()) {
+      DelayedDestructorExceptionSpecChecks.clear();
+      return;
+    }
+  }
+
   // Perform any deferred checking of exception specifications for virtual
   // destructors.
   for (unsigned i = 0, e = DelayedDestructorExceptionSpecChecks.size();
diff --git a/test/CXX/except/except.spec/p14.cpp b/test/CXX/except/except.spec/p14.cpp
index ff21ab8e56..99ed2fdee1 100644
--- a/test/CXX/except/except.spec/p14.cpp
+++ b/test/CXX/except/except.spec/p14.cpp
@@ -101,3 +101,14 @@ namespace PR14141 {
     ~Derived3() noexcept(true) = default; // expected-error {{does not match the calculated}}
   };
 }
+
+namespace rdar13017229 {
+  struct Base {
+    virtual ~Base() {}
+  };
+  
+  struct Derived : Base {
+    virtual ~Derived();
+    Typo foo(); // expected-error{{unknown type name 'Typo'}}
+  };
+}
-- 
2.40.0