51 lines
1.7 KiB
Markdown
51 lines
1.7 KiB
Markdown
# core_io
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`std::io` with all the parts that don't work in core removed.
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## Adding new nightly versions
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First, make sure the commit you want to add is fetch in the git tree at
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`/your/rust/dir/.git`. Then, import the right source files:
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```
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$ echo FULL_COMMIT_ID ...|GIT_DIR=/your/rust/dir/.git ./sync.sh
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```
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Instead of echoing in the commit IDs, you might pipe in `rustc-commit-db
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list-valid`.
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Now look at the changes with `git status`. If nothing changed then the commit
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you tried to add was already there. Otherwise commit all changes and new files
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now. If only `mapping.rs` changed, the I/O code has not changed for this
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particular commit. If a directory in `src/` was added, after committing, `cd`
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into it to apply the patch.
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Find out which previously-existing commit is closest to the new one and search
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this git repository for a commit with the description `Patch COMMIT for core`.
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For example, if you're adding dd56a6ad0845b76509c4f8967e8ca476471ab7e0, the
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best closest commit is 80d733385aa2ff150a5d6f83ecfe55afc7e19e68.
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```
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$ git log --pretty=oneline --grep=80d733385aa2ff150a5d6f83ecfe55afc7e19e68
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92fc0ad81c432b5fa3e848fc1892815ca2f55100 Patch 80d733385aa2ff150a5d6f83ecfe55afc7e19e68 for core
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```
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The commit ID at the start of the line is the patch we'll try to apply:
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```sh
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$ git show 92fc0ad81c432b5fa3e848fc1892815ca2f55100|patch -p3
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$ cargo build
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```
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Now, fix any errors `cargo` reports. If `patch` also reported errors, you may
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look at the rejects for inspiration ;).
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Finally, commit this new version:
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```
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$ git commit -m "Patch dd56a6ad0845b76509c4f8967e8ca476471ab7e0 for core" .
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```
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Do not commit any files in different directories, this will break the patching
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scheme.
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