From 34efa5c2a84a8c7c7beb855dec24a321eebcbd6b Mon Sep 17 00:00:00 2001
From: Martin Sebor <msebor@redhat.com>
Date: Wed, 14 Oct 2020 15:18:19 -0600
Subject: PR c/97413 - bogus error on function declaration with many VLA
 arguments

gcc/ChangeLog:

	PR c/97413
	* attribs.c (init_attr_rdwr_indices): Unwrap extra list layer.

gcc/c-family/ChangeLog:

	PR c/97413
	* c-attribs.c (build_attr_access_from_parms): Wrap chain of VLA
	bounds in an extra list.

gcc/testsuite/ChangeLog:

	PR c/97413
	* gcc.dg/Wvla-parameter-8.c: New test.
---
 gcc/attribs.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'gcc/attribs.c')

diff --git a/gcc/attribs.c b/gcc/attribs.c
index 94b9e02..3bdb2ff 100644
--- a/gcc/attribs.c
+++ b/gcc/attribs.c
@@ -2049,6 +2049,8 @@ init_attr_rdwr_indices (rdwr_map *rwm, tree attrs)
 
       /* The (optional) list of VLA bounds.  */
       tree vblist = TREE_CHAIN (mode);
+      if (vblist)
+       vblist = TREE_VALUE (vblist);
 
       mode = TREE_VALUE (mode);
       if (TREE_CODE (mode) != STRING_CST)
-- 
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