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Add workaround for sporadic kills when building on Macos #10196

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Dec 16, 2021
Merged

Add workaround for sporadic kills when building on Macos #10196

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13 changes: 12 additions & 1 deletion crates/cargo-util/src/paths.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -539,7 +539,18 @@ fn _link_or_copy(src: &Path, dst: &Path) -> Result<()> {
// gory details.
fs::copy(src, dst).map(|_| ())
} else {
fs::hard_link(src, dst)
if cfg!(target_os = "macos") {
// This is a work-around for a bug on macos. There seems to be a race condition
// with APFS when hard-linking binaries. Gatekeeper does not have signing or
// hash informations stored in kernel when running the process. Therefore killing it.
// This problem does not appear when copying files as kernel has time to process it.
// Note that: fs::copy on macos is using CopyOnWrite (syscall fclonefileat) which should be
// as fast as hardlinking.
// See https://github.com/rust-lang/cargo/issues/10060 for the details
fs::copy(src, dst).map(|_| ())
} else {
fs::hard_link(src, dst)
}
};
link_result
.or_else(|err| {
Expand Down