From: Jason Merrill <jason@redhat.com>
Date: Wed, 21 Dec 2022 02:06:09 +0000 (-0500)
Subject: fold: fix use of protected_set_expr_location_unshare
X-Git-Tag: basepoints/gcc-14~2394
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef0abcbc400e0ecb8ed1ddf61d96f8f3f88fe63b;p=thirdparty%2Fgcc.git

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.
---

diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc
index 42547f433ed9..00e2af0680cf 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;
 }