Also fix a bunch of cases where we didn't toggle features off if the relevant
leaf isn't available, and switch XCR0 checks to a packed struct.
Closes#23385.
* If a function prototype is declarated inside a function, do not
translate it to a top-level extern function declaration. Similar to
extern local variable, just wrapped it into a block-local struct.
* Add a new extern_local_fn tag of aro_translate_c node for present
extern local function declaration.
* When a function body has a C function prototype declaration, it adds
an extern local function declaration. Subsequent function references
will look for this function declaration.
`wasm2c` uses an interesting mechanism to "fake" the existence of cache
directories. However, `wasi_snapshot_preview1_fd_seek` was not correctly
integrated with this system, so previously crashed when run on a file in
a cache directory due to trying to call `fseek` on a `FILE *` which was
`NULL`.
* When saving bigint limbs, we gave the iovec the wrong length, meaning
bigint data (and the following string and compile error data) was corrupted.
* When updating a stale ZOIR cache, we failed to truncate the file, so
just wrote more bytes onto the end of the stale cache.
This is actually completely well-defined. The resulting slice always has
0 elements. The only disallowed case is casting *to* a slice of a
zero-bit type, because in that case, you cna't figure out how many
destination elements to use (and there's *no* valid destination length
if the source slice corresponds to more than 0 bits).
When decoding the literals section of a compressed block, the length of
the regenerated size of the literals must be checked against the buffer
literals are decoded into.
`--fetch` flag now has additional optional parameter, which specifies
how lazy dependencies should be fetched:
* `needed` — lazy dependencies are fetched only if they are required
for current build configuration to work. Default and works same
as old `--fetch` flag.
* `all` — lazy dependencies are always fetched. If `--system` flag
is used after that, it's guaranteed that **any** build configuration
will not require additional download of dependencies during build.
Helpful for distro packagers and CI systems:
https://www.github.com/ziglang/zig/issues/14597#issuecomment-1426827495
If none is passed, behaviour is same as if `needed` was passed.
Signed-off-by: Eric Joldasov <bratishkaerik@landless-city.net>
