Strange behavior of `copyfile` regarding symlinks on Linux and macOS

3 次查看（过去 30 天）
Zaikun Zhang
Zaikun Zhang 2023-10-22
编辑： Zaikun Zhang 2023-11-21
Consider the following function.
%test_copyfile.m
function test_copyfile()
system('rm -rf folder*; mkdir folder1; cd folder1; touch a b c d e f g; ln -s d dlink; rm d; cd ..');
success = copyfile('folder1','folder2');
assert(success);
fprintf('\nfolder1:\n');
dir('folder1')
fprintf('\nfolder2:\n');
dir('folder2')
assert(isequal({dir('folder1').name}, {dir('folder2').name}));
return
Running it in MATLAB R2023b on Ubuntu 22.04 or macOS 13 (Intel chip), I got the following result.
folder1:
. .. a b c dlink e f g
folder2:
. .. b f
Error using assert
Assertion failed.
Error in test_copyfile (line 14)
assert(isequal({dir('folder1').name}, {dir('folder2').name}));
The test has been conducted on a few machines. It seems that the content of folder2 is not deterministic. Sometimes, it may be
folder2:
. .. a g
or
folder2:
. ..
But I have not recognized the pattern.
Is this expected? Thanks.

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采纳的回答

Zaikun Zhang
Zaikun Zhang 2023-10-31
编辑：Zaikun Zhang 2023-11-21
Update 20231031: Below is the response from MathWorks support.
"
Please be assured that this has been confirmed as a bug and is currently under thorough investigation by our development team. In the meantime, I have taken the initiative to attach your contact information to the relevant internal request. This ensures that you will be promptly notified when the bug is resolved in future releases.
"

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