Don't assert that linkage decls are always C++, it's not true. Fixes PR5019.

llvm-svn: 82557

2 files changed, 8 insertions, 4 deletions

diff --git a/clang/lib/CodeGen/Mangle.cpp b/clang/lib/CodeGen/Mangle.cpp
index 973f0d188cb..5a994d2234b 100644
--- a/clang/lib/CodeGen/Mangle.cpp
+++ b/clang/lib/CodeGen/Mangle.cpp
@@ -279,11 +279,8 @@ void CXXNameMangler::mangleName(const NamedDecl *ND) {
   //         ::= <local-name>
   //
   const DeclContext *DC = ND->getDeclContext();
-  while (isa<LinkageSpecDecl>(DC)) {
-    assert(cast<LinkageSpecDecl>(DC)->getLanguage() == 
-           LinkageSpecDecl::lang_cxx && "Unexpected linkage decl!");
+  while (isa<LinkageSpecDecl>(DC))
     DC = DC->getParent();
-  }
   
   if (DC->isTranslationUnit() || isStdNamespace(DC)) {
     // Check if we have a template.
diff --git a/clang/test/CodeGenCXX/mangle.cpp b/clang/test/CodeGenCXX/mangle.cpp
index d952f314397..dbcd0c9460d 100644
--- a/clang/test/CodeGenCXX/mangle.cpp
+++ b/clang/test/CodeGenCXX/mangle.cpp
@@ -130,3 +130,10 @@ extern "C++" {
  void h() { } 
 }
 
+// PR5019
+extern "C" { struct a { int b; }; }
+
+// CHECK: @_Z1fP1a
+int f(struct a *x) {
+    return x->b;
+}