Mac OS X 10.11.4: Model I/O: exportAssetToURL returns true, even when it fails.
Originator: | iosdeveloperzone | ||
Number: | rdar://26530184 | Date Originated: | 27-May-2016 08:36 PM |
Status: | Open | Resolved: | |
Product: | OS X | Product Version: | Mac OS X 10.11.4 (15E65) |
Classification: | Crash/Hang/Data Loss | Reproducible: | Always |
Summary: The MDLAsset method public func exportAssetToURL(URL: NSURL) -> Bool will return true even if it fails to produce an output file. Similarly the method will not throw when it fails to produce a file public func exportAssetToURL(URL: NSURL, error: ()) throws This bugs could lead to user data loss. Steps to Reproduce: 1) Run the attached playground 2) Observe that when the export URL is to an existing directory the export succeeds as expected. When an attempt is made to export to a non-existent directory the method still returns true, but no output is produced. The playground tests for this condition and calls fatalError() Expected Results: If the export fails, the non-throwing method should return false and the throwing method should throw an error. Actual Results: The method returns true (or does not throw) even when it fails to produce output. Regression: The problem occurs on OS X 10.11.4 and also on iOS 9.3.
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Attachment available on GitHub
https://github.com/iosdevzone/Radars/tree/master/26530184-ModelIOExportRadar