nitvm: fix a crash caused by a bad allocation of virtual tables

Signed-off-by: Julien Pagès <julien.projet@gmail.com>

diff --git a/src/vm.nit b/src/vm.nit
index eed0d47..0cb7961 100644 (file)
--- a/src/vm.nit
+++ b/src/vm.nit
@@ -405,8 +405,9 @@ class MemoryManager
                        total_size += 2;
                }
 
-               // Add the size of the perfect hashtable
-               total_size += mask+1;
+               // Add the size of the perfect hashtable (mask +1)
+               // Add one because we start to fill the vtable at position 1 (0 is the init position)
+               total_size += mask+2;
                long unsigned int* vtable = malloc(sizeof(long unsigned int)*total_size);
                
                // Initialisation to the first position of the virtual table (ie : Object)