diff --git a/gcc/expr.cc b/gcc/expr.cc
index 2918c4697354..8a1875d7809a 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -5466,6 +5466,7 @@ emit_push_insn (rtx x, machine_mode mode, tree type, rtx size,
 	  /* If source is a constant VAR_DECL with a simple constructor,
              store the constructor to the stack instead of moving it.  */
 	  const_tree decl;
+	  HOST_WIDE_INT sz;
 	  if (partial == 0
 	      && MEM_P (xinner)
 	      && SYMBOL_REF_P (XEXP (xinner, 0))
@@ -5473,9 +5474,11 @@ emit_push_insn (rtx x, machine_mode mode, tree type, rtx size,
 	      && VAR_P (decl)
 	      && TREE_READONLY (decl)
 	      && !TREE_SIDE_EFFECTS (decl)
-	      && immediate_const_ctor_p (DECL_INITIAL (decl), 2))
-	    store_constructor (DECL_INITIAL (decl), target, 0,
-			       int_expr_size (DECL_INITIAL (decl)), false);
+	      && immediate_const_ctor_p (DECL_INITIAL (decl), 2)
+	      && (sz = int_expr_size (DECL_INITIAL (decl))) > 0
+	      && CONST_INT_P (size)
+	      && INTVAL (size) == sz)
+	    store_constructor (DECL_INITIAL (decl), target, 0, sz, false);
 	  else
 	    emit_block_move (target, xinner, size, BLOCK_OP_CALL_PARM);
 	}
diff --git a/gcc/testsuite/gcc.c-torture/execute/pr114552.c b/gcc/testsuite/gcc.c-torture/execute/pr114552.c
new file mode 100644
index 000000000000..22cb4ee351f2
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/pr114552.c
@@ -0,0 +1,24 @@
+/* PR middle-end/114552 */
+
+struct __attribute__((packed)) S { short b; int c; };
+struct T { struct S b; int e; };
+static const struct T k = { { 1, 0 }, 0 };
+
+__attribute__((noinline)) void
+foo (void)
+{
+  asm volatile ("" : : : "memory");
+}
+
+__attribute__((noinline)) void
+bar (struct S n)
+{
+  foo ();
+}
+
+int
+main ()
+{
+  bar (k.b);
+  return 0;
+}