When we're looking for redeclarations which might provide a definition in CodeGen, make sure we examine all the redeclarations. PR13252.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159586 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 15 insertions, 0 deletions

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 25053b91a4..ef20cf4556 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -1111,6 +1111,7 @@ CodeGenModule::GetOrCreateLLVMFunction(StringRef MangledName,
   } else if (getLangOpts().CPlusPlus && D.getDecl()) {
     // Look for a declaration that's lexically in a record.
     const FunctionDecl *FD = cast<FunctionDecl>(D.getDecl());
+    FD = FD->getMostRecentDecl();
     do {
       if (isa<CXXRecordDecl>(FD->getLexicalDeclContext())) {
         if (FD->isImplicit() && !ForVTable) {
diff --git a/test/CodeGenCXX/inline-functions.cpp b/test/CodeGenCXX/inline-functions.cpp
index 69dfe0db98..8c011de28a 100644
--- a/test/CodeGenCXX/inline-functions.cpp
+++ b/test/CodeGenCXX/inline-functions.cpp
@@ -53,3 +53,17 @@ namespace test1 {
     c.func();
   }
 }
+
+// PR13252
+namespace test2 {
+  struct A;
+  void f(const A& a);
+  struct A {
+    friend void f(const A& a) { } 
+  };
+  void g() {
+    A a;
+    f(a);
+  }
+  // CHECK: define linkonce_odr void @_ZN5test21fERKNS_1AE
+}