mirror of https://github.com/python/cpython
shutil.copyfile(src,dst) was clobbering the file when the src and dst were
the same. Added check to verify the two names are not the same. Does not check the actual files to see if there is a symbolic link. Closes SF bug 490165 and Tzot's patch 604600.
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@ -24,6 +24,11 @@ def copyfile(src, dst):
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"""Copy data from src to dst"""
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fsrc = None
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fdst = None
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# check for same pathname; all platforms
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_src = os.path.normcase(os.path.abspath(src))
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_dst = os.path.normcase(os.path.abspath(dst))
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if _src == _dst:
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return
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try:
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fsrc = open(src, 'rb')
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fdst = open(dst, 'wb')
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