Cpp: Fix CppClassType is_subclass crashing with types without base classes

40ebcd90 · gsamain · Xavier Thompson · 01568879 · 40ebcd90
Commit 40ebcd90 authored Mar 25, 2019 by gsamain Committed by Xavier Thompson Jun 18, 2020
Hide whitespace changes
Inline Side-by-side

Showing with 4 additions and 3 deletions

Cython/Compiler/PyrexTypes.py Cython/Compiler/PyrexTypes.py +4 -3

No files found.
--- a/Cython/Compiler/PyrexTypes.py
+++ b/Cython/Compiler/PyrexTypes.py
@@ -3940,9 +3940,10 @@ class CppClassType(CType):
    def is_subclass(self, other_type):
        if self.same_as_resolved_type(other_type):
            return 1
-        for base_class in self.base_classes:
-            if base_class.is_subclass(other_type):
-                return 1
+        if self.base_classes:
+            for base_class in self.base_classes:
+                if base_class.is_subclass(other_type):
+                    return 1
        return 0

    def set_scope(self, scope):