Matt Taylor

This PR adds a port of `fish`. Blockers: - [ ] https://github.com/managarm/mlibc/issues/467 - [ ] https://github.com/managarm/mlibc/issues/466 (can be worked around in mlibc by adding a definition of `W_EXITCODE`) - [...

Sometimes when running `xbstrap run make-image` using Docker I get the following error: ``` $ xbstrap run make-image qemu xbstrap: Running the following plan: run update-initrd run make-image run qemu...

Fixes #572.

treewide: make public headers compile with c89 pedantic errors

1

Fixes #1150. Useful as a backstop to detect unwanted C99/C11/GNUisms. Note that we omit the check for `long long`, i.e `-Wno-long-long` as it requires us to change too many things....

The abidiff CI check only runs on x86_64. We should change it to check each architecture.

Review architecture specific defines

2

Some architecture specific defines are really just checking for 32-bit / 64-bit: we should refactor these to directly check for pointer size so new ISA ports require less boilerplate. e.g...

In the past we've accidentally committed single line comments to public headers. We should add a regression test for this.

See https://wiki.musl-libc.org/libc-test.