PR c/22013

	PR c/22098
	* langhooks.h (struct lang_hooks): Add expr_to_decl.
	* langhooks.c (lhd_expr_to_decl): New.
	* langhooks-def.h (lhd_expr_to_decl, LANG_HOOKS_EXPR_TO_DECL):
	New.
	(LANG_HOOKS_INITIALIZER): Update.
	* tree.c (recompute_tree_invarant_for_addr_expr): Call
	expr_to_decl langhook.
	* c-tree.h (c_expr_to_decl): Declare.
	* c-typeck.c (c_expr_to_decl): New.
	(build_unary_op): Do not handle ADDR_EXPR of COMPOUND_LITERAL_EXPR
	specially.
	* c-objc-common.h (LANG_HOOKS_EXPR_TO_DECL): Define.

testsuite:
	* gcc.c-torture/compile/pr22013-1.c,
	gcc.c-torture/execute/pr22098-1.c,
	gcc.c-torture/execute/pr22098-2.c,
	gcc.c-torture/execute/pr22098-3.c: New tests.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@101630 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/langhooks.h b/gcc/langhooks.h
index a0c24fc4e21..9ec07ad71f8 100644
--- a/gcc/langhooks.h
+++ b/gcc/langhooks.h
@@ -412,6 +412,12 @@ struct lang_hooks
 			    enum built_in_class bt_class,
 			    const char *library_name, tree attrs);
 
+  /* Called by recompute_tree_invarant_for_addr_expr to go from EXPR
+     to a contained expression or DECL, possibly updating *TC, *TI or
+     *SE if in the process TREE_CONSTANT, TREE_INVARIANT or
+     TREE_SIDE_EFFECTS need updating.  */
+  tree (*expr_to_decl) (tree expr, bool *tc, bool *ti, bool *se);
+
   /* Whenever you add entries here, make sure you adjust langhooks-def.h
      and langhooks.c accordingly.  */
 };