From: Alexandre Oliva <oliva@adacore.com>
Date: Thu, 29 Dec 2022 17:32:48 +0000 (-0300)
Subject: varpool: do not add NULL vnodes to referenced
X-Git-Tag: basepoints/gcc-14~2288
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50a0270389925e0b3d82b025d48f702fdab542f6;p=thirdparty%2Fgcc.git

varpool: do not add NULL vnodes to referenced

Avoid adding NULL vnodes to referenced tables.


for  gcc/ChangeLog

	* varpool.cc (symbol_table::remove_unreferenced_decls): Do not
	add NULL vnodes to referenced table.
---

diff --git a/gcc/varpool.cc b/gcc/varpool.cc
index bfd17f1250cc..ccbd6e50f4b0 100644
--- a/gcc/varpool.cc
+++ b/gcc/varpool.cc
@@ -680,10 +680,12 @@ symbol_table::remove_unreferenced_decls (void)
 	    enqueue_node (vnode, &first);
 	  else
 	    {
-	      referenced.add (vnode);
+	      if (vnode)
+		referenced.add (vnode);
 	      while (vnode && vnode->alias && vnode->definition)
 		{
 		  vnode = vnode->get_alias_target ();
+		  gcc_checking_assert (vnode);
 	          referenced.add (vnode);
 		}
 	    }