Rollup of 15 pull requests #49308
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Rollup of 15 pull requests #49308
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spawn() is expected to return an error if the specified file could not be executed. FreeBSD's posix_spawn() supports returning ENOENT/ENOEXEC if the exec() fails, which not all platforms support. This brings a very significant performance improvement for FreeBSD, involving heavy use of Command in threads, due to fork() invoking jemalloc fork handlers and causing lock contention. FreeBSD's posix_spawn() avoids this problem due to using vfork() internally.
The relevant support was added in https://sourceware.org/bugzilla/show_bug.cgi?id=10354#c12
…hings Also, tweak the test for ignored type aliases such that replacing the type alias by a newtype struct leads to a well-formed type definition, and errors when used the way the type alias is used.
First of all, the lint is specific for type aliases. Second, it turns out the bounds are not entirely ignored but actually used when accessing associated types. So change the wording of the lint, and adapt its name to reality. The lint has never been on stable or beta, so renaming is safe.
…hout "as", suggest to use the "as" form instead. This is necessary to get rid of the type bound, and hence silence the warning.
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💔 Test failed - status-appveyor |
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#[repr(packed(n))]RFC 1399. #48528, Command: Support posix_spawn() on FreeBSD/OSX/GNU Linux #48624, rustc: Add a#[wasm_custom_section]attribute #48883, Improve lint for type alias bounds #48909, add an "unstable features" chapter to the rustdoc book #49028, Misc changes from my parallel rustc branch #49030, Remove core::fmt::num::Decimal #49102, Reduce the diagnostic spam when multiple fields are missing in pattern #49160, Document only-X test header #49169, Bump racer and home #49203, Produce nice array lengths on a best effort basis #49262, Use GNU version of fgrep/egrep tool if available #49272, Add test for issue-48238 #49295