This was a little more work to fix.
Can't return early without leaking, so I made all
of those P derefs conditional on P being non-NULL.
I factored out the append_const definition to avoid
having to wrap the long lines with the increased indentation.
>From b354befe9f7fe754c5fe012e424ccec84ef4e96d Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyer...@redhat.com>
Date: Thu, 23 Sep 2010 12:47:32 +0200
Subject: [PATCH tabled] server/bucket.c: don't deref NULL upon failed malloc
Signed-off-by: Jim Meyering <meyer...@redhat.com>
---
server/bucket.c | 24 +++++++++++++++---------
1 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/server/bucket.c b/server/bucket.c
index eb03e03..a4af385 100644
--- a/server/bucket.c
+++ b/server/bucket.c
@@ -1,6 +1,6 @@
/*
- * Copyright 2008-2009 Red Hat, Inc.
+ * Copyright 2008-2010 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -788,28 +788,34 @@ static GList *bucket_list_pfx(GList *content, GHashTable
*common_pfx,
s = malloc(cpfx_len);
p = s;
+#define append_const(buf, c) \
+ do { memcpy(buf, c, sizeof(c)-1); (buf) += sizeof(c)-1; } while (0)
+
tmpl = pfx_list;
while (tmpl) {
prefix = (char *) tmpl->data;
pfx_len = strlen(prefix);
- memcpy(p, optag, sizeof(optag)-1); p += sizeof(optag)-1;
- memcpy(p, pfoptag, sizeof(pfoptag)-1); p += sizeof(pfoptag)-1;
- memcpy(p, prefix, pfx_len); p += pfx_len;
- memcpy(p, delim, delim_len); p += delim_len;
- memcpy(p, pfedtag, sizeof(pfedtag)-1); p += sizeof(pfedtag)-1;
- memcpy(p, edtag, sizeof(edtag)-1); p += sizeof(edtag)-1;
+ if (p) {
+ append_const(p, optag);
+ append_const(p, pfoptag);
+ memcpy(p, prefix, pfx_len); p += pfx_len;
+ memcpy(p, delim, delim_len); p += delim_len;
+ append_const(p, pfedtag);
+ append_const(p, edtag);
+ }
free(prefix);
tmpl = tmpl->next;
}
- *p = 0;
+ if (p)
+ *p = 0;
free(delim);
g_list_free(pfx_list);
- return g_list_append(content, s);
+ return s ? g_list_append(content, s) : content;
}
struct bucket_list_info {
--
1.7.3.234.g7bba3
--
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