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Use posix_spawn for absolute paths on macOS Currently, on macOS, Rust never uses the fast posix_spawn path if a directory change is requested, due to a bug in Apple's libc. However, the bug is only triggered if the program is a relative path. This PR makes it so that the fast path continues to work if the program is an absolute path or a lone filename. This was an alternative proposed in https://github.com/rust-lang/rust/pull/80537#issue-776674009, and it makes a measurable performance difference in some of my code that spawns thousands of processes. |
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| .. | ||
| alloc | ||
| backtrace@4e5a3f7292 | ||
| core | ||
| panic_abort | ||
| panic_unwind | ||
| portable-simd | ||
| proc_macro | ||
| profiler_builtins | ||
| rtstartup | ||
| rustc-std-workspace-alloc | ||
| rustc-std-workspace-core | ||
| rustc-std-workspace-std | ||
| std | ||
| stdarch@42df7394d3 | ||
| test | ||
| unwind | ||