I only wanted to fix a bug originally, but this logic was kind of a
rat's nest. But now... okay, it still *is*, but it's now a slightly more
navigable nest, with cute little signs occasionally, painted by adorable
rats desparately trying to follow the specification.
Hopefully #3806 comes along at some point to simplify this logic a
little.
Resolves: #23139
Error messages never contain periods or grave accents.
Get rid of the periods and use apostrophes instead in
probably the only two error messages that had them.
Most of these are gated by -Dtest-extra-targets because:
* We don't really have CI resources to spare at the moment.
* They're relatively niche if you're not on a musl distro.
* And the few musl distros that exist don't support all these targets.
* Quite a few of them are broken and need investigating.
x86_64-linux-musl and aarch64-linux-musl are not gated as they're the most
common targets that people will be running dynamic musl on, so we'll want to
have some bare minimum coverage of those.
* When storing a zero-bit type, we should short-circuit almost
immediately. Zero-bit stores do not need to do any work.
* The bit size computation for arrays is incorrect; the `abiSize` will
already be appropriately aligned, but the logic to do so here
incorrectly assumes that zero-bit types have an alignment of 0. They
don't; their alignment is 1.
Resolves: #21202Resolves: #21508Resolves: #23307
I changed to `wasm/abi.zig`, this design is certainly better than the previous one. Still there is some conflict of interest between llvm and self-hosted backend, better design will appear when abi tests will be tested with self-hosted.
Resolves: #23304Resolves: #23305
By returning an initialized sigset (instead of taking the set as an output
parameter), these functions can be used to directly initialize the `mask`
parameter of a `Sigaction` instance.
When linking a libc, Zig should defer to the C library for sigset
operations. The pre-filled constants signal sets (empty_sigset,
filled_sigset) are not compatible with C library initialization, so remove
them and use the runtime `sigemptyset` and `sigfillset` methods to
initialize any sigset.
* Indexing zero-bit types should not produce AIR indexing instructions
* Getting a runtime-known element pointer from a many-pointer should
check that the many-pointer is not comptime-only
Resolves: #23405
