From: Jeff Trawick <trawick@apache.org>
Date: Sat, 26 Jan 2002 23:05:10 +0000 (+0000)
Subject: avoid a palloc of zero bytes so memory debuggers don't barf
X-Git-Tag: 2.0.31~81
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=753e0d77c6ebf6b97c322c3ad53c74d248d19928;p=apache

avoid a palloc of zero bytes so memory debuggers don't barf


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93038 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/server/core.c b/server/core.c
index 013b5344e8..e265bb8472 100644
--- a/server/core.c
+++ b/server/core.c
@@ -483,6 +483,15 @@ void ap_core_reorder_directories(apr_pool_t *p, server_rec *s)
     nelts = sec_dir->nelts;
     elts = (ap_conf_vector_t **)sec_dir->elts;
 
+    if (!nelts) {
+        /* simple case of already being sorted... */
+        /* We're not checking this condition to be fast... we're checking
+         * it to avoid trying to palloc zero bytes, which can trigger some
+         * memory debuggers to barf
+         */
+        return;
+    }
+    
     /* we have to allocate tmp space to do a stable sort */
     apr_pool_create(&tmp, p);
     sortbin = apr_palloc(tmp, sec_dir->nelts * sizeof(*sortbin));