linux-kernel - [PATCH 3.17-rc5 ] scripts/sortextable: Suppress warning: ‘relocs

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Date:	Tue, 16 Sep 2014 12:49:22 -0600
From:	tim.gardner@...onical.com
To:	linux-kernel@...r.kernel.org
Cc:	Tim Gardner <tim.gardner@...onical.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jamie Iles <jamie.iles@...cle.com>
Subject: [PATCH 3.17-rc5 ] scripts/sortextable: Suppress warning: ‘relocs_size’ may be used uninitialized

From: Tim Gardner <tim.gardner@...onical.com>

In file included from scripts/sortextable.c:194:0:
scripts/sortextable.c: In function ‘main’:
scripts/sortextable.h:176:3: warning: ‘relocs_size’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   memset(relocs, 0, relocs_size);
   ^
scripts/sortextable.h:106:6: note: ‘relocs_size’ was declared here
  int relocs_size;
      ^
In file included from scripts/sortextable.c:192:0:
scripts/sortextable.h:176:3: warning: ‘relocs_size’ may be used uninitialized in this function [-Wmaybe-uninitialized]
   memset(relocs, 0, relocs_size);
   ^
scripts/sortextable.h:106:6: note: ‘relocs_size’ was declared here
  int relocs_size;
      ^

gcc 4.9.1

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jamie Iles <jamie.iles@...cle.com>
Signed-off-by: Tim Gardner <tim.gardner@...onical.com>
---

Is gcc 4.9 dumber then 4.8 ? gcc 4.8 doesn't produce this warning.

 scripts/sortextable.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/sortextable.h b/scripts/sortextable.h
index 8fac3fd..ba87004 100644
--- a/scripts/sortextable.h
+++ b/scripts/sortextable.h
@@ -103,7 +103,7 @@ do_func(Elf_Ehdr *ehdr, char const *const fname, table_sort_t custom_sort)
 	Elf_Sym *sort_needed_sym;
 	Elf_Shdr *sort_needed_sec;
 	Elf_Rel *relocs = NULL;
-	int relocs_size;
+	int relocs_size = 0;
 	uint32_t *sort_done_location;
 	const char *secstrtab;
 	const char *strtab;
-- 
2.1.0

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