Due to #59998, the panic hook fires incorrectly for errors that should
not be treated as ICEs. Previously, this would only print the default
panic message, but moving the ICE printing into the panic handler will
now print the entire ICE ordeal we all hate to see.
Unfortunately this will make #59998 a lot more visible.
This allows lints and other diagnostics to refer to items
by a unique ID instead of relying on whacky path
resolution schemes that may break when items are
relocated.
This returns whether a `Place` references the same region of memory
as its base, or equivalently whether it contains a `Deref` projection.
This is helpful for analyses that must track state for locals, since an
assignment to `x` or `x.field` is fundamentally different than one to
`*x`, which may mutate any memory region.
so rename it `new_sized_aligned`.
6/11 use `align` = `layout.align.abi`.
`from_const_alloc` uses `alloc.align`, but that is `assert_eq!` to `layout.align.abi`.
only 4/11 use something interesting for `align`.
std: Remove the `wasm_syscall` feature
This commit removes the `wasm_syscall` feature from the
wasm32-unknown-unknown build of the standard library. This feature was
originally intended to allow an opt-in way to interact with the
operating system in a posix-like way but it was never stabilized.
Nowadays with the advent of the `wasm32-wasi` target that should
entirely replace the intentions of the `wasm_syscall` feature.
rustc: Handle modules in "fat" LTO more robustly
When performing a "fat" LTO the compiler has a whole mess of codegen
units that it links together. To do this it needs to select one module
as a "base" module and then link everything else into this module.
Previously LTO passes assume that there's at least one module in-memory
to link into, but nowadays that's not always true! With incremental
compilation modules may actually largely be cached and it may be
possible that there's no in-memory modules to work with.
This commit updates the logic of the LTO backend to handle modules a bit
more uniformly during a fat LTO. This commit immediately splits them
into two lists, one serialized and one in-memory. The in-memory list is
then searched for the largest module and failing that we simply
deserialize the first serialized module and link into that. This
refactoring avoids juggling three lists, two of which are serialized
modules and one of which is half serialized and half in-memory.
Closes#63349
Rollup of 7 pull requests
Successful merges:
- #63867 (resolve: Block expansion of a derive container until all its derives are resolved)
- #63880 (Validation: check raw wide pointer metadata)
- #63914 (ty: use Align for ReprOptions pack and align.)
- #63941 (rustbuild: allow disabling deny(warnings) for bootstrap)
- #63949 (Fix build src/libtest)
- #63984 (Update rust-installer to limit memory use)
- #63992 (Small improvement for Ord implementation of integers)
Failed merges:
r? @ghost
