fix node liveness

python/jittor/version

@@ -1 +1 @@
-ee002b49b2fd09c70af20f5067a1667dcd07ec05
+08f4ca8b2c0a2978cd3fbc9a3a6e76bd1463ca12

setup.py

@@ -21,7 +21,7 @@ with open(os.path.join(path, "README.src.md")) as fh:
 
 setuptools.setup(
     name='jittor',  
-    version='1.1.0',
+    version='1.1.1',
     # scripts=[],
     author="Jittor Group",
     author_email="ran.donglang@gmail.com",

src/misc/nano_vector.h

@@ -108,7 +108,12 @@ struct NanoVector {
 
     // @pyjt(__map_getitem__)
     inline NanoVector slice(Slice slice) {
-        if (slice.mask&2) slice.stop = size();
+        if (slice.step>0) {
+            if (slice.mask&2) slice.stop = size();
+        } else {
+            if (slice.mask&1) slice.start = size()-1;
+            if (slice.mask&2) slice.stop = 0;
+        }
         if (slice.start<0) slice.start += size();
         if (slice.stop<0) slice.stop += size();
         ASSERT(slice.start>=0 && slice.stop>=0 && slice.start<size() && slice.stop<=size())

src/node.h

@@ -12,6 +12,7 @@
 namespace jittor {
 
 extern unordered_map<void*, int64> lived_nodes;
+extern int64 total_node;
 
 struct NodeFlags {
     typedef uint16 nf_t;
@@ -107,7 +108,7 @@ struct Node {
 
 #ifdef NODE_MEMCHECK
     inline Node() {
-        lived_nodes[(void*)this] = lived_nodes.size()+1;
+        lived_nodes[(void*)this] = ++total_node;
         registe_node_trace(this);
     }
 
@@ -132,7 +133,13 @@ struct Node {
     #endif
     }
     void memcheck_all_exist() const;
-    int64 __id() const;
+    inline int64 __id() const {
+    #ifdef NODE_MEMCHECK
+        return lived_nodes.at((void*)this);
+    #else
+        return 0;
+    #endif
+    }
     // release from counter and memory checker
     void __release();
     #define CHECK_NODE_EXIST(node) \