From patchwork Sat Jul 10 11:41:51 2010
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Subject: [1/4] Don't crash when there are no options in a LTO file
Date: Sat, 10 Jul 2010 01:41:51 -0000
From: Andi Kleen <andi@firstfloor.org>
X-Patchwork-Id: 58477
Message-Id: <20100710141.607682497@firstfloor.org>
To: gcc-patches@gcc.gnu.org

2010-07-10   Andi Kleen <ak@linux.intel.com>

	* lto-opts.c (lto_read_file_options): Check for missing section.


diff --git a/gcc/lto-opts.c b/gcc/lto-opts.c
index 8405714..fa52f95 100644
--- a/gcc/lto-opts.c
+++ b/gcc/lto-opts.c
@@ -356,6 +356,8 @@ lto_read_file_options (struct lto_file_decl_data *file_data)
   struct lto_input_block ib;
 
   data = lto_get_section_data (file_data, LTO_section_opts, NULL, &len);
+  if (!data)
+	  return;
   header = (const struct lto_simple_header *) data;
   opts_offset = sizeof (*header);