Mangle CXXOperatorCallExprs, fixes PR5796.

llvm-svn: 91507

2 files changed, 26 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/Mangle.cpp b/clang/lib/CodeGen/Mangle.cpp
index 90cc89445e4..6c28d22f6b6 100644
--- a/clang/lib/CodeGen/Mangle.cpp
+++ b/clang/lib/CodeGen/Mangle.cpp
@@ -1078,6 +1078,16 @@ void CXXNameMangler::mangleExpression(const Expr *E) {
     break;
   }
 
+  case Expr::CXXOperatorCallExprClass: {
+    const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E);
+    unsigned NumArgs = CE->getNumArgs();
+    mangleOperatorName(CE->getOperator(), /*Arity=*/NumArgs);
+    // Mangle the arguments.
+    for (unsigned i = 0; i != NumArgs; ++i)
+      mangleExpression(CE->getArg(i));
+    break;
+  }
+      
   case Expr::ParenExprClass:
     mangleExpression(cast<ParenExpr>(E)->getSubExpr());
     break;
diff --git a/clang/test/CodeGenCXX/mangle.cpp b/clang/test/CodeGenCXX/mangle.cpp
index ede7e3ddaf0..090a3f17eef 100644
--- a/clang/test/CodeGenCXX/mangle.cpp
+++ b/clang/test/CodeGenCXX/mangle.cpp
@@ -229,6 +229,22 @@ template void ft8<int>();
 // CHECK: @_Z3ft8IPvEN11__enable_ifIXsr11__is_scalarIT_E7__valueEvE6__typeEv
 template void ft8<void*>();
 
+// PR5796
+namespace PR5796 {
+template<typename> struct __is_scalar {
+  enum { __value = 0 };
+};
+
+template<bool, typename> struct __enable_if {};
+template<typename T> struct __enable_if<true, T> { typedef T __type; };
+template<typename T>
+
+// CHECK: define linkonce_odr void @_ZN6PR57968__fill_aIiEENS_11__enable_ifIXntsrNS_11__is_scalarIT_EE7__valueEvE6__typeEv
+typename __enable_if<!__is_scalar<T>::__value, void>::__type __fill_a() { };
+
+void f() { __fill_a<int>(); }
+}
+
 namespace Expressions {
 // Unary operators.