1 files changed, 4 insertions, 0 deletions
diff --git a/src/url.cc b/src/url.cc
index b4e6c0f..63419ba 100644
--- a/src/url.cc
+++ b/src/url.cc
@@ -284,6 +284,10 @@ bool UrlImpl::relative(std::string const& url, Url const* base) {
         path-empty    = 0<pchar>
       */
       start = pos;
+    } else {
+      // cannot happen
+      assert(false);
+      start = pos;
     }
     while (true) {
       if (is_unreserved(*pos)) {