From ef0abcbc400e0ecb8ed1ddf61d96f8f3f88fe63b Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Tue, 20 Dec 2022 21:06:09 -0500
Subject: [PATCH] fold: fix use of protected_set_expr_location_unshare

Unlike protected_set_expr_location, this variant can return
a different tree.

gcc/ChangeLog:

	* fold-const.cc (fold_convert_loc): Check return value of
	protected_set_expr_location_unshare.
---
 gcc/fold-const.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc
index 42547f433ed..00e2af0680c 100644
--- a/gcc/fold-const.cc
+++ b/gcc/fold-const.cc
@@ -2618,7 +2618,7 @@ fold_convert_loc (location_t loc, tree type, tree arg)
       gcc_unreachable ();
     }
  fold_convert_exit:
-  protected_set_expr_location_unshare (tem, loc);
+  tem = protected_set_expr_location_unshare (tem, loc);
   return tem;
 }
 
-- 
2.11.4.GIT