This macOS code in Xcode 8.3.3:
if !fileManager.fileExists(atPath: (saveFileURL.path)) {
do {
1 ==> try fileManager.linkItem(atPath: url.path, toPath: saveFileURL.path)
2 ==> } catch {
// couldn't create hard link, copy file instead
do {
3 ==> try fileManager.copyItem(at: url, to: saveFileURL)
} catch let error as NSError {
unexpected(error: error,
"Cannot copy \(url.path) to
\(saveFileURL.path)\n\nReason: ")
return false
}
}
}
return true
lldb tells me the code at 1 fails. That was expected. The app is sandboxed
and the security bookmark code that gives access to the destination is in flux.
lldb says control transfers to 2 then falls into the do block containing 3.
The code at 3 fails for the same reason. This is when the unexpected occurred.
lldb says that control transferred to 2 then to the end of the if statement
where the function returns true. The catch following the do containing the
function “unexpected” is not entered.
Is that a bug?
As for why 1 uses path instead of URL an older version of the code had this
note.
// linkItemAtURL fails trying to link foo.jpg_original to somedir/foo.jpg.
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