From 427614f89ffa407f028db2d8ab3aedccacac23ca Mon Sep 17 00:00:00 2001
From: Nico Weber <thakis@chromium.org>
Date: Wed, 28 Aug 2013 14:03:53 -0700
Subject: [PATCH] document an assumption

---
 src/deps_log.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/deps_log.cc b/src/deps_log.cc
index a5d726c..64ef58f 100644
--- a/src/deps_log.cc
+++ b/src/deps_log.cc
@@ -234,6 +234,7 @@ bool DepsLog::Load(const string& path, State* state, string* err) {
         ++unique_dep_record_count;
     } else {
       int path_size = size - 4;
+      assert(path_size > 0);  // CanonicalizePath() rejects empty paths.
       // There can be up to 3 bytes of padding.
       if (buf[path_size - 1] == '\0') --path_size;
       if (buf[path_size - 1] == '\0') --path_size;
-- 
2.7.4