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Rollup merge of #126583 - RalfJung:interpret-oom, r=saethlin

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interpret: better error when we ran out of memory
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Guillaume Gomez 2024-06-18 15:30:46 +02:00 committed by GitHub
commit ab2cadabe1
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1 changed files with 5 additions and 2 deletions
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7
compiler/rustc_middle/src/mir/interpret/allocation.rs
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@ -52,7 +52,7 @@ impl AllocBytes for Box<[u8]> {
}
fn zeroed(size: Size, _align: Align) -> Option<Self> {
let bytes = Box::<[u8]>::try_new_zeroed_slice(size.bytes_usize()).ok()?;
let bytes = Box::<[u8]>::try_new_zeroed_slice(size.bytes().try_into().ok()?).ok()?;
// SAFETY: the box was zero-allocated, which is a valid initial value for Box<[u8]>
let bytes = unsafe { bytes.assume_init() };
Some(bytes)
@ -323,7 +323,10 @@ impl<Prov: Provenance, Bytes: AllocBytes> Allocation<Prov, (), Bytes> {
/// first call this function and then call write_scalar to fill in the right data.
pub fn uninit(size: Size, align: Align) -> Self {
match Self::uninit_inner(size, align, || {
panic!("Allocation::uninit called with panic_on_fail had allocation failure");
panic!(
"interpreter ran out of memory: cannot create allocation of {} bytes",
size.bytes()
);
}) {
Ok(x) => x,
Err(x) => x,