From 97e3c92355da5e885866e65dd1c1c6903f8611c2 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Tue, 4 May 2010 21:08:37 +0200
Subject: re PR c/43981 (-Wunused-but-set-variable does not consider array
 sizing use of a variable)

	PR c/43981
	* c-parser.c (c_parser_direct_declarator_inner): Call mark_exp_read
	on dimen.

	* gcc.dg/Wunused-var-8.c: New test.

From-SVN: r159044
---
 gcc/c-parser.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'gcc/c-parser.c')

diff --git a/gcc/c-parser.c b/gcc/c-parser.c
index cbdee1e..e5440d4 100644
--- a/gcc/c-parser.c
+++ b/gcc/c-parser.c
@@ -2474,6 +2474,8 @@ c_parser_direct_declarator_inner (c_parser *parser, bool id_present,
 				     "expected %<]%>");
 	  return NULL;
 	}
+      if (dimen)
+	mark_exp_read (dimen);
       declarator = build_array_declarator (brace_loc, dimen, quals_attrs,
 					   static_seen, star_seen);
       if (declarator == NULL)
-- 
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