1 // RUN: %clang_cc1 -triple %itanium_abi_triple -verify %s
2 // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm %s -o - -std=c++98 | FileCheck %s --check-prefix=CHECK-CXX98
3 // RUN: %clang_cc1 -triple %itanium_abi_triple -emit-llvm %s -o - -std=c++11 | FileCheck %s --check-prefix=CHECK-CXX11
4 // expected-no-diagnostics
5 
6 struct XPTParamDescriptor {};
7 struct nsXPTParamInfo {
8   nsXPTParamInfo(const XPTParamDescriptor& desc);
9 };
10 void a(XPTParamDescriptor *params) {
11   const nsXPTParamInfo& paramInfo = params[0];
12 }
13 
14 // CodeGen of reference initialized const arrays.
15 namespace PR5911 {
16   template <typename T, int N> int f(const T (&a)[N]) { return N; }
17   int iarr[] = { 1 };
18   int test() { return f(iarr); }
19 }
20 
21 // radar 7574896
22 struct Foo { int foo; };
23 Foo& ignoreSetMutex = *(new Foo);
24 
25 // Binding to a bit-field that requires a temporary.
26 struct { int bitfield : 3; } s = { 3 };
27 const int &s2 = s.bitfield;
28 
29 // In C++98, this forms a reference to itself. In C++11 onwards, this performs
30 // copy-construction.
31 struct SelfReference { SelfReference &r; };
32 extern SelfReference self_reference_1;
33 SelfReference self_reference_2 = {self_reference_1};
34 // CHECK-CXX98: @self_reference_2 = global %[[SELF_REF:.*]] { %[[SELF_REF]]* @self_reference_1 }
35 // CHECK-CXX11: @self_reference_2 = global %[[SELF_REF:.*]] zeroinitializer
36 // CHECK-CXX11: call {{.*}}memcpy{{.*}} @self_reference_2 {{.*}} @self_reference_1
37