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-rw-r--r--src/CHANGES.txt3
-rw-r--r--src/engine/SCons/Util.py2
2 files changed, 4 insertions, 1 deletions
diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index 39e9f9d..402b781 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -7,6 +7,9 @@
RELEASE 2.1.0.alpha.yyyymmdd - NEW DATE WILL BE INSERTED HERE
+ From Dmitry R.:
+ - Handle Environment in case __semi_deepcopy is None
+
From Benoit Belley:
- Much improved support for Windows UNC paths (\\SERVERNAME).
diff --git a/src/engine/SCons/Util.py b/src/engine/SCons/Util.py
index 7a6cb51..2523eda 100644
--- a/src/engine/SCons/Util.py
+++ b/src/engine/SCons/Util.py
@@ -464,7 +464,7 @@ def semi_deepcopy(x):
if copier:
return copier(x)
else:
- if hasattr(x, '__semi_deepcopy__'):
+ if hasattr(x, '__semi_deepcopy__') and callable(x.__semi_deepcopy__):
return x.__semi_deepcopy__()
elif isinstance(x, UserDict):
return x.__class__(_semi_deepcopy_dict(x))