1 files changed, 25 insertions, 0 deletions
diff --git a/test/SemaCXX/decltype.cpp b/test/SemaCXX/decltype.cpp
index f1900b2..2956f9a 100644
--- a/test/SemaCXX/decltype.cpp
+++ b/test/SemaCXX/decltype.cpp
@@ -76,6 +76,31 @@ namespace PR18876 {
   decltype(f(), 0) *e; // expected-error {{attempt to use a deleted function}}
 }
 
+namespace D5789 {
+  struct P1 { char x[6]; } g1 = { "foo" };
+  struct LP1 { struct P1 p1; };
+
+  // expected-warning@+3 {{subobject initialization overrides}}
+  // expected-note@+2 {{previous initialization}}
+  // expected-note@+1 {{previous definition}}
+  template<class T> void foo(decltype(T(LP1{ .p1 = g1, .p1.x[1] = 'x' }))) {}
+
+  // expected-warning@+3 {{subobject initialization overrides}}
+  // expected-note@+2 {{previous initialization}}
+  template<class T>
+  void foo(decltype(T(LP1{ .p1 = g1, .p1.x[1] = 'r' }))) {} // okay
+
+  // expected-warning@+3 {{subobject initialization overrides}}
+  // expected-note@+2 {{previous initialization}}
+  template<class T>
+  void foo(decltype(T(LP1{ .p1 = { "foo" }, .p1.x[1] = 'x'}))) {} // okay
+
+  // expected-warning@+3 {{subobject initialization overrides}}
+  // expected-note@+2 {{previous initialization}}
+  // expected-error@+1 {{redefinition of 'foo'}}
+  template<class T> void foo(decltype(T(LP1{ .p1 = g1, .p1.x[1] = 'x' }))) {}
+}
+
 template<typename>
 class conditional {
 };