[UnitTest] [Marshal] [macOS] Marshalling CD-i directory record makes runtime crash with SIGBUS

[claunia]

Version

Development commit

Commit hash

HEAD

Tested debug version?

• [X] Yes

Which operating systems have you used?

• [ ] Windows
• [ ] Linux
• [X] macOS
• [ ] Other

What is the architectural bit size you're using?

• [ ] 32-bit
• [X] 64-bit
• [ ] Unsure or unknown

What processor are you using?

• [ ] An Intel or AMD
• [X] An ARM or Apple Silicon
• [ ] Unsure or unknown

Description

Marshalling CD-i's DirectoryRecord structure from unit test makes the kernel die with SIGBUS. Confirmed it does not happen in Linux/x64, unconfirmed if it happens in macOS/x64 or Windows.

Exact command line used

Unit test

Expected behavior

Correct big endian marshalling.

Actual behavior

At the middle of reversing the ending of the fields in https://github.com/aaru-dps/Aaru.Helpers/blob/c9e8b4dd0fddd6a1c222e583090efdfbf6c178dc/Marshal.cs#L270 a SIGBUS is received and killed by the kernel.

Output of command execution with debug output enabled

None.

[claunia]

Confirmed works in linux/x64, win/x86, win/x64, osx/x64, fails in osx/arm64.