.

wcfs/client/wcfs.cpp

@@ -247,7 +247,7 @@ static error mmap_into_ro(void *addr, size_t size, os::File f, off_t offset);
 // (*) equivalent might be to send something like "pin #<bsize>.. Z" (pin
 //     blocks bsize till ∞ to zeros).
 error WCFS::_headWait(zodb::Tid at) {
-    WCFS *wc = this;
+    WCFS& wc = *this;
     xerr::Contextf E("%s: headWait @%s", v(wc), v(at));
     etrace("");
 
@@ -257,7 +257,7 @@ error WCFS::_headWait(zodb::Tid at) {
 
     // XXX dumb implementation, because _headWait should go away.
     while (1) {
-        tie(xatStr, err) = ioutil::ReadFile(wc->_path("head/at"));
+        tie(xatStr, err) = ioutil::ReadFile(wc._path("head/at"));
         if (err != nil)
             return E(err);