[ADD] core: add python 3.9 opcodes in safe_eval

Partial backport of 3cced11e.

Part-of: odoo/odoo#138754

odoo/tools/safe_eval.py

@@ -67,6 +67,7 @@ _CONST_OPCODES = set(opmap[x] for x in [
     'BUILD_LIST', 'BUILD_MAP', 'BUILD_TUPLE', 'BUILD_SET',
     # 3.6: literal map with constant keys https://bugs.python.org/issue27140
     'BUILD_CONST_KEY_MAP',
+    'LIST_EXTEND',
     # until Python 3.5, literal maps are compiled to creating an empty map
     # (pre-sized) then filling it key by key
     'STORE_MAP',
@@ -88,6 +89,9 @@ _EXPR_OPCODES = _CONST_OPCODES.union(set(opmap[x] for x in [
     # comprehensions
     'LIST_APPEND', 'MAP_ADD', 'SET_ADD',
     'COMPARE_OP',
+    # specialised comparisons
+    'CONTAINS_OP',
+    'DICT_MERGE',
 ] if x in opmap))
 
 _SAFE_OPCODES = _EXPR_OPCODES.union(set(opmap[x] for x in [
@@ -109,6 +113,7 @@ _SAFE_OPCODES = _EXPR_OPCODES.union(set(opmap[x] for x in [
     'RAISE_VARARGS', 'LOAD_NAME', 'STORE_NAME', 'DELETE_NAME', 'LOAD_ATTR',
     'LOAD_FAST', 'STORE_FAST', 'DELETE_FAST', 'UNPACK_SEQUENCE',
     'LOAD_GLOBAL', # Only allows access to restricted globals
+    'RERAISE', 'JUMP_IF_NOT_EXC_MATCH',
 ] if x in opmap))
 
 _logger = logging.getLogger(__name__)