Properly support passing a packed struct to byteSwapAllFields (#30571)

Reopening [#25698](https://github.com/ziglang/zig/pull/25698)
Closes [#25054](https://github.com/ziglang/zig/issues/25054)

Reviewed-on: https://codeberg.org/ziglang/zig/pulls/30571
Reviewed-by: Andrew Kelley <andrewrk@noreply.codeberg.org>
Co-authored-by: Steven Casper <sebastiancasper3@gmail.com>
Co-committed-by: Steven Casper <sebastiancasper3@gmail.com>
8d4a9119b8Steven Casper committed on 12/29/2025, 1:36:11 AM· committed by Andrew Kelleyparente8a2e65
1 file changedLine totals unavailable