[3.8] bpo-37834: Prevent shutil.rmtree exception (GH-15602) (#15603)

when built on non-Windows system without fd system call support, like older versions of macOS. (cherry picked from commit 7fcc208) Co-authored-by: Ned Deily <nad@python.org>
python · Aug 29, 2019 · 25a044e · 25a044e
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commit 25a044e
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diff --git a/Lib/shutil.py b/Lib/shutil.py
@@ -544,7 +544,7 @@ def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2,
                          ignore_dangling_symlinks=ignore_dangling_symlinks,
                          dirs_exist_ok=dirs_exist_ok)
 
-if hasattr(stat, 'FILE_ATTRIBUTE_REPARSE_POINT'):
+if hasattr(os.stat_result, 'st_file_attributes'):
     # Special handling for directory junctions to make them behave like
     # symlinks for shutil.rmtree, since in general they do not appear as
     # regular links.

diff --git a/Misc/NEWS.d/next/Library/2019-08-29-16-41-36.bpo-37834.FThnsh.rst b/Misc/NEWS.d/next/Library/2019-08-29-16-41-36.bpo-37834.FThnsh.rst
@@ -0,0 +1,2 @@
+Prevent shutil.rmtree exception when built on non-Windows system without fd
+system call support, like older versions of macOS.