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Auto merge of #8167 - rust-lang:fix-8166, r=xFredNet

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fix an ICE on unwrapping a None

This very likely fixes #8166 though I wasn't able to meaningfully reduce a test case. This line is the only call to `unwrap` within that function, which was the one in the stack trace that triggered the ICE, so I think we'll be OK.

`@hackmad` can you pull and build this branch and check if it indeed fixes your problem?

---

changelog: Fixed ICE in [`unnecessary_cast`]
This commit is contained in:
bors 2021-12-25 13:38:08 +00:00
commit 547efad945
1 changed files with 3 additions and 2 deletions
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5
clippy_lints/src/casts/unnecessary_cast.rs
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@ -49,8 +49,9 @@ pub(super) fn check(
if cast_from.kind() == cast_to.kind() =>
{
if let Some(src) = snippet_opt(cx, lit.span) {
let num_lit = NumericLiteral::from_lit_kind(&src, &lit.node).unwrap();
lint_unnecessary_cast(cx, expr, num_lit.integer, cast_from, cast_to);
if let Some(num_lit) = NumericLiteral::from_lit_kind(&src, &lit.node) {
lint_unnecessary_cast(cx, expr, num_lit.integer, cast_from, cast_to);
}
}
},
_ => {