diff options
| -rw-r--r-- | library/std/src/sys/unix/thread.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/library/std/src/sys/unix/thread.rs b/library/std/src/sys/unix/thread.rs index 7db3065dee0..f2c604bf7ee 100644 --- a/library/std/src/sys/unix/thread.rs +++ b/library/std/src/sys/unix/thread.rs @@ -767,6 +767,16 @@ pub mod guard { const GUARD_PAGES: usize = 1; let guard = guardaddr..guardaddr + GUARD_PAGES * page_size; Some(guard) + } else if cfg!(target_os = "openbsd") { + // OpenBSD stack already includes a guard page, and stack is + // immutable. + // + // We'll just note where we expect rlimit to start + // faulting, so our handler can report "stack overflow", and + // trust that the kernel's own stack guard will work. + let stackptr = get_stack_start_aligned()?; + let stackaddr = stackptr.addr(); + Some(stackaddr - page_size..stackaddr) } else { // Reallocate the last page of the stack. // This ensures SIGBUS will be raised on |