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Use random HashMap keys on Hermit #107387

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Mar 30, 2023
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13 changes: 11 additions & 2 deletions library/std/src/sys/hermit/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -76,9 +76,18 @@ pub fn abort_internal() -> ! {
}
}

// FIXME: just a workaround to test the system
pub fn hashmap_random_keys() -> (u64, u64) {
(1, 2)
let mut buf = [0; 16];
let mut slice = &mut buf[..];
while !slice.is_empty() {
let res = cvt(unsafe { abi::read_entropy(slice.as_mut_ptr(), slice.len(), 0) })
.expect("failed to generate random hashmap keys");
slice = &mut slice[res as usize..];
}

let key1 = buf[..8].try_into().unwrap();
let key2 = buf[8..].try_into().unwrap();
(u64::from_ne_bytes(key1), u64::from_ne_bytes(key2))
}

// This function is needed by the panic runtime. The symbol is named in
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