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std: use cvt to handle errors from read_entropy on Hermit

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joboet 2023-03-29 10:52:48 +02:00
parent fdbf109b63
commit f6bde0352b
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1 changed files with 3 additions and 9 deletions
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10
library/std/src/sys/hermit/mod.rs
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@ -80,16 +80,10 @@ pub fn hashmap_random_keys() -> (u64, u64) {
let mut buf = [0; 16];
let mut slice = &mut buf[..];
while !slice.is_empty() {
let res = unsafe { abi::read_entropy(slice.as_mut_ptr(), slice.len(), 0) };
if res < 0 {
panic!(
"random key generation failed: {}",
crate::io::Error::from_raw_os_error(-res as i32)
);
} else {
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();