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The three panic-related library crates need to have access to `core`,
and `compiler-builtins` needs to be in the crate graph. Rather than
specifying both dependencies, switch these crates to use
`rustc-std-workspace-core` which already does this.
This means there is now a single place that the `compiler-builtins`
dependency needs to get configured, for everything other than `alloc`
and `std`.
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Many of `std`'s dependency have a dependency on the crates.io
`compiler-builtins` when used with the feature
`rustc-std-workspace-core`. Use a Cargo patch to select the in-tree
version instead.
`compiler-builtins` is also added as a dependency of
`rustc-std-workspace-core` so these crates can remove their crates.io
dependency in the future.
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Currently, the code for process aborts is duplicated across `panic_abort` and `std`. This PR uses `#[rustc_std_internal_symbol]` to make the `std` implementation available to `panic_abort` via the linker, thereby deduplicating the code.
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And remove the libc crate when it isn't needed
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After rust-lang/rust#101946 this completes the move to cfg-if 1.0 by:
* Updating getrandom 0.1.14->0.1.16
* Updating panic_abort, panic_unwind, and unwind to cfg-if 1.0
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Since RFC 3052 soft deprecated the authors field anyway, hiding it from
crates.io, docs.rs, and making Cargo not add it by default, and it is
not generally up to date/useful information, we should remove it from
crates in this repo.
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Android has the ability to supply an abort message [1]. This message is
automatically included in the debug trace, which helps debugging [2].
Modify panic_abort to populate this message before calling abort().
[1] https://android.googlesource.com/platform/bionic/+/master/libc/include/android/set_abort_message.h
[2] https://source.android.com/devices/tech/debug/native-crash
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