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std::threads: revisit stack address calculation on netbsd. #122002

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merged 2 commits into from
Mar 11, 2024
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std::threads: revisit stack address calculation on netbsd. #122002

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std::threads: revisit stack address calculation on netbsd.
devnexen Mar 4, 2024
ffdd97f
further changes from feedback
devnexen Mar 8, 2024
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5 changes: 3 additions & 2 deletions library/std/src/sys/pal/unix/thread.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -806,9 +806,9 @@ pub mod guard {
#[cfg(any(
target_os = "android",
target_os = "freebsd",
target_os = "netbsd",
target_os = "hurd",
target_os = "linux",
target_os = "netbsd",
target_os = "l4re"
))]
unsafe fn get_stack_start() -> Option<*mut libc::c_void> {
Expand Down Expand Up @@ -911,9 +911,10 @@ pub mod guard {
}
}) * page_size;
Some(guard)
} else if cfg!(target_os = "openbsd") {
} else if cfg!(any(target_os = "openbsd", target_os = "netbsd")) {
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@workingjubilee workingjubilee Mar 11, 2024 •
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Ah, I was being a bit dense earlier, it seems!

// OpenBSD stack already includes a guard page, and stack is
// immutable.
// NetBSD stack includes the guard page.
//
// We'll just note where we expect rlimit to start
// faulting, so our handler can report "stack overflow", and
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