diff --git a/gcc/cp/constexpr.cc b/gcc/cp/constexpr.cc
index 5f7fc6f8f0c1b787ee23f6630f2e2bbfd5802753..5e0d3399172202b5d68386b5132bd08ce0e4bebd 100644
--- a/gcc/cp/constexpr.cc
+++ b/gcc/cp/constexpr.cc
@@ -3081,7 +3081,13 @@ reduced_constant_expression_p (tree t)
 	     element.  */
 	  if (!reduced_constant_expression_p (e.value))
 	    return false;
-	  /* Empty class field may or may not have an initializer.  */
+	  /* We want to remove initializers for empty fields in a struct to
+	     avoid confusing output_constructor.  */
+	  if (is_empty_field (e.index)
+	      && TREE_CODE (TREE_TYPE (t)) == RECORD_TYPE)
+	    return false;
+	  /* Check for non-empty fields between initialized fields when
+	     CONSTRUCTOR_NO_CLEARING.  */
 	  for (; field && e.index != field;
 	       field = next_subobject_field (DECL_CHAIN (field)))
 	    if (!is_really_empty_class (TREE_TYPE (field),
diff --git a/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda27.C b/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda27.C
new file mode 100644
index 0000000000000000000000000000000000000000..24e2e9b6c989e50325e5d782f0231b587a3bbe46
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1z/constexpr-lambda27.C
@@ -0,0 +1,26 @@
+// PR c++/106369
+// { dg-do compile { target c++17 } }
+
+struct A {
+  int a[256];
+  constexpr int &operator[] (int n) noexcept { return a[n]; }
+  constexpr const int &operator[] (int n) const noexcept { return a[n]; }
+};
+struct B {};
+template <typename T>
+struct C {
+  constexpr T &foo (const char x) noexcept { c = T::d[x]; return static_cast<T &>(*this); }
+  int c;
+};
+struct D : public C<D>, public B
+{
+  D () noexcept = default;
+  static constexpr char e[9] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I' };
+  static constexpr A d = [] () constexpr {
+    A f {};
+    for (int i = 0; i < 9; ++i)
+      f[e[i]] = 1;
+    return f;
+  } ();
+};
+constexpr auto g = D{}.foo ('E');