diff --git a/clang/lib/CodeGen/CGExprAgg.cpp b/clang/lib/CodeGen/CGExprAgg.cpp
--- a/clang/lib/CodeGen/CGExprAgg.cpp
+++ b/clang/lib/CodeGen/CGExprAgg.cpp
@@ -2056,7 +2056,7 @@
               Record->hasTrivialCopyAssignment() ||
               Record->hasTrivialMoveConstructor() ||
               Record->hasTrivialMoveAssignment() ||
-              Record->isUnion()) &&
+              Record->hasAttr<TrivialABIAttr>() || Record->isUnion()) &&
              "Trying to aggregate-copy a type without a trivial copy/move "
              "constructor or assignment operator");
       // Ignore empty classes in C++.
diff --git a/clang/test/CodeGenCXX/trivial_abi.cpp b/clang/test/CodeGenCXX/trivial_abi.cpp
--- a/clang/test/CodeGenCXX/trivial_abi.cpp
+++ b/clang/test/CodeGenCXX/trivial_abi.cpp
@@ -262,3 +262,6 @@
 void testExceptionLarge() {
   calleeExceptionLarge(Large(), Large());
 }
+
+// PR42961
+Small (*fp)() = []() -> Small {};