macOS SDK directory has a weird futuristic timestamp

Originator:mark
Number:rdar://32924313 Date Originated:2017-06-22
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 9b2 (9M137d)
Classification:Other Bug Reproducible:Always
 
In Xcode 9 beta 2 (9M137d), the MacOSX.sdk directory has a weird timestamp. It purports to be from far in the future.

litterbox@litterbox zsh% TZ=UTC ls -ldT /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk
drwxr-xr-x  5 root  wheel  160 Dec 29 13:43:44 2098 /Applications/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk

This is a time_t of 4070699024, or octal 036250370020. I found that octal value stored for the timestamp of this directory in the cpio archive headers within Xcode_9_beta_2.xip. This weird timestamp is coming from Xcode_9_beta_2.xip.

The first Xcode 9 beta (9M136h) had another weird timestamp for this directory, but in 2068 instead of 2098.

litterbox@litterbox zsh% xcodebuild -version
Xcode 9.0
Build version 9M137d

Steps to Reproduce:
Download Xcode_9_beta_2.xip and double-click it. Archive Utility will expand it. Look at the timestamp of Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk.

Expected Results:
The timestamp should be plausible.

Observed Results:
The timestamp is not plausible. For Xcode 9 beta 2, it’s from December 2098.

Version:
Xcode 9b2 (9M137d)

Comments

2017-07-25 20:22 UTC to Apple

This has persisted in Xcode 9 betas 3 and 4.

By mark at July 25, 2017, 8:22 p.m. (reply...)

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