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Implemented modules:
1. alloc
2. os_str
3. env
4. math
Tracking Issue: https://github.com/rust-lang/rust/issues/100499
API Change Proposal: https://github.com/rust-lang/libs-team/issues/87
This was originally part of https://github.com/rust-lang/rust/pull/100316. Since
that PR was becoming too unwieldy and cluttered, and with suggestion
from @dvdhrm, I have extracted a minimal std implementation to this PR.
Signed-off-by: Ayush Singh <ayushsingh1325@gmail.com>
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avoid duplicating TLS state between test std and realstd
This basically re-lands https://github.com/rust-lang/rust/pull/100201 and https://github.com/rust-lang/rust/pull/106638, which got reverted by https://github.com/rust-lang/rust/pull/110861. This works around 2 Miri limitations:
- Miri doesn't support the magic linker section that our Windows TLS support relies on, and instead knows where in std to find the symbol that stores the thread callback.
- For macOS, Miri only supports at most one destructor to be registered per thread.
The 2nd would not be very hard to fix (though the intended destructor order is unclear); the first would be a lot of work to fix. Neither of these is a problem for regular Rust code, but in the std test suite we have essentially 2 copies of the std code and then these both become issues. To avoid that we have the std test crate import the TLS code from the real std instead of having its own copy.
r? ``````@m-ou-se``````
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I think it was left there by mistake after previous refactoring.
Signed-off-by: Ayush Singh <ayushsingh1325@gmail.com>
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This allows removing all the platform-dependent code from `library/std/src/thread/local.rs` and `library/std/src/thread/mod.rs`
Signed-off-by: Ayush Singh <ayushsingh1325@gmail.com>
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