Use function name as range for B024

crates/ruff/resources/test/fixtures/flake8_bugbear/B027.py

@@ -120,3 +120,11 @@ def empty_1(self, foo: float):
     @abstractmethod
     def empty_1(self, foo: Union[str, int, list, float]):
         ...
+
+
+from dataclasses import dataclass
+
+
+@dataclass
+class Foo(ABC):  # noqa: B024
+    ...

crates/ruff/src/rules/flake8_bugbear/rules/abstract_base_class.rs

@@ -2,6 +2,7 @@ use rustpython_parser::ast::{self, Constant, Expr, Keyword, Ranged, Stmt};
 
 use ruff_diagnostics::{Diagnostic, Violation};
 use ruff_macros::{derive_message_formats, violation};
+use ruff_python_ast::helpers::identifier_range;
 use ruff_python_semantic::analyze::visibility::{is_abstract, is_overload};
 use ruff_python_semantic::model::SemanticModel;
 
@@ -133,7 +134,7 @@ pub(crate) fn abstract_base_class(
                 AbstractBaseClassWithoutAbstractMethod {
                     name: name.to_string(),
                 },
-                stmt.range(),
+                identifier_range(stmt, checker.locator),
             ));
         }
     }

crates/ruff/src/rules/flake8_bugbear/snapshots/ruff__rules__flake8_bugbear__tests__B024_B024.py.snap.new

@@ -0,0 +1,53 @@
+---
+source: crates/ruff/src/rules/flake8_bugbear/mod.rs
+assertion_line: 57
+---
+B024.py:18:7: B024 `Base_1` is an abstract base class, but it has no abstract methods
+   |
+18 | class Base_1(ABC):  # error
+   |       ^^^^^^ B024
+19 |     def method(self):
+20 |         foo()
+   |
+
+B024.py:71:7: B024 `MetaBase_1` is an abstract base class, but it has no abstract methods
+   |
+71 | class MetaBase_1(metaclass=ABCMeta):  # error
+   |       ^^^^^^^^^^ B024
+72 |     def method(self):
+73 |         foo()
+   |
+
+B024.py:82:7: B024 `abc_Base_1` is an abstract base class, but it has no abstract methods
+   |
+82 | class abc_Base_1(abc.ABC):  # error
+   |       ^^^^^^^^^^ B024
+83 |     def method(self):
+84 |         foo()
+   |
+
+B024.py:87:7: B024 `abc_Base_2` is an abstract base class, but it has no abstract methods
+   |
+87 | class abc_Base_2(metaclass=abc.ABCMeta):  # error
+   |       ^^^^^^^^^^ B024
+88 |     def method(self):
+89 |         foo()
+   |
+
+B024.py:92:7: B024 `notabc_Base_1` is an abstract base class, but it has no abstract methods
+   |
+92 | class notabc_Base_1(notabc.ABC):  # error
+   |       ^^^^^^^^^^^^^ B024
+93 |     def method(self):
+94 |         foo()
+   |
+
+B024.py:141:7: B024 `abc_set_class_variable_4` is an abstract base class, but it has no abstract methods
+    |
+141 | # this doesn't actually declare a class variable, it's just an expression
+142 | class abc_set_class_variable_4(ABC):  # error
+    |       ^^^^^^^^^^^^^^^^^^^^^^^^ B024
+143 |     foo
+    |
+
+