RelativeVirtualAddress deprecation

CHANGELOG.md

@@ -146,6 +146,8 @@ This release includes Ghidra PyGhidra support, performance improvements, depende
 
 ### Breaking Changes
 
+- deprecate RelativeVirtualAddress @corkamig #3072
+
 ### New Rules (26)
 
 - nursery/run-as-nodejs-native-module mehunhoff@google.com

capa/features/address.py

@@ -13,6 +13,7 @@
 # limitations under the License.
 
 import abc
+import warnings
 
 
 class Address(abc.ABC):
@@ -131,6 +132,10 @@ def __lt__(self, other):
 class RelativeVirtualAddress(int, Address):
     """a memory address relative to a base address"""
 
+    def __new__(cls, *args, **kwargs):
+        warnings.warn("RelativeVirtualAddress is deprecated", DeprecationWarning, stacklevel=2)
+        return super().__new__(cls, *args, **kwargs)
+
     def __repr__(self):
         return f"relative(0x{self:x})"
 

tests/test_engine.py

@@ -23,6 +23,7 @@
     DynamicCallAddress,
     DNTokenOffsetAddress,
     AbsoluteVirtualAddress,
+    RelativeVirtualAddress,
 )
 
 ADDR1 = capa.features.address.AbsoluteVirtualAddress(0x401001)
@@ -55,6 +56,11 @@ def test_no_address_hash():
     assert d[addr_zero] == "zero"
 
 
+def test_relative_address():
+    with pytest.warns(DeprecationWarning):
+        _ = RelativeVirtualAddress(0)
+
+
 def test_dn_token_offset_address_cross_type_eq():
     addr = DNTokenOffsetAddress(0x1000, 0x10)
     assert (addr == AbsoluteVirtualAddress(0x1010)) is False