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fix: Make rustc_layout_scalar_valid_range attributes work for non-decimal literals #15688

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merged 1 commit into from Sep 29, 2023
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fix: Make rustc_layout_scalar_valid_range attributes work for non-decimal literals #15688

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10 changes: 9 additions & 1 deletion crates/hir-ty/src/layout/adt.rs
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Expand Up @@ -119,7 +119,15 @@ fn layout_scalar_valid_range(db: &dyn HirDatabase, def: AdtId) -> (Bound<u128>,
let attr = attrs.by_key(name).tt_values();
for tree in attr {
if let Some(it) = tree.token_trees.first() {
if let Ok(it) = it.to_string().parse() {
let text = it.to_string().replace('_', "");
let base = match text.as_bytes() {
[b'0', b'x', ..] => 16,
[b'0', b'o', ..] => 8,
[b'0', b'b', ..] => 2,
_ => 10,
};

if let Ok(it) = u128::from_str_radix(&text, base) {
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Are you sure this is working? u128::from_str_radix("0xffffffff", 16) fails because of the 0x prefix.

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No I noticed it still not working, that would explain it

return Bound::Included(it);
}
}
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