middle-end/106457 - improve array_at_struct_end_p for array objects

Array references to array objects are never at struct end.

	PR middle-end/106457
	* tree.cc (array_at_struct_end_p): Handle array objects
	specially.

diff --git a/gcc/tree.cc b/gcc/tree.cc
index 84000dd8b697ad9cb781ffaf5c2c378d363a8d21..fed1434d141d8297075cece345a5509c3b650b1d 100644 (file)
--- a/gcc/tree.cc
+++ b/gcc/tree.cc
@@ -12778,6 +12778,10 @@ array_at_struct_end_p (tree ref)
       && DECL_SIZE_UNIT (ref)
       && TREE_CODE (DECL_SIZE_UNIT (ref)) == INTEGER_CST)
     {
+      /* If the object itself is the array it is not at struct end.  */
+      if (DECL_P (ref_to_array))
+       return false;
+
       /* Check whether the array domain covers all of the available
          padding.  */
       poly_int64 offset;