Release build crash with Illegal Instruction: 4

ghostery / user-agent-ios

Ghostery iOS Browser

https://apps.apple.com/us/app/ghostery-privacy-browser/id472789016

Mozilla Public License 2.0

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Release build crash with Illegal Instruction: 4 #1205

Closed chrmod closed 3 years ago

chrmod commented 3 years ago

All Released build fail to compiled Shared framework. Swift compiler crashes with Illegal Instruction: 4.

chrmod commented 3 years ago

After investigation and following tips like this one https://stackoverflow.com/a/39642455 we've discovered that compiler crashes only -O swift code optimisation flag set.

This is a regression as it worked fine with older version of Swift (Xcode) and was reported to Swift issue tracker https://bugs.swift.org/browse/SR-14722