.

wcfs/client/wcfs.cpp

@@ -1043,7 +1043,7 @@ pair<Mapping, error> _FileH::mmap(int64_t blk_start, int64_t blk_len, VMA *vma)
     });
 
     if (stop > f._headfsize) {
-        uint8_t *zmem_start = mem_start + (max(f._headfsize/*XXX -1 ?*/, start) - start);
+        uint8_t *zmem_start = mem_start + (max(f._headfsize, start) - start);
         err = mmap_zero_into_ro(zmem_start, mem_stop - zmem_start);
         if (err != nil)
             return make_pair(nil, E(err));