fix: ICE when array index exceeds usize
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@ -174,6 +174,7 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
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// only `usize` index is legal in rust array index
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// leave other type to rustc
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if let Constant::Int(off) = constant
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&& off <= usize::MAX as u128
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&& let ty::Uint(utype) = cx.typeck_results().expr_ty(index).kind()
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&& *utype == ty::UintTy::Usize
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&& let ty::Array(_, s) = ty.kind()
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5
tests/ui/crashes/ice-12253.rs
Normal file
5
tests/ui/crashes/ice-12253.rs
Normal file
@ -0,0 +1,5 @@
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#[allow(overflowing_literals, unconditional_panic, clippy::no_effect)]
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fn main() {
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let arr: [i32; 5] = [0; 5];
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arr[0xfffffe7ffffffffffffffffffffffff];
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}
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