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Check for arrays with size > 32

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This commit is contained in:
Lukas Stevens 2017-10-25 21:41:31 +02:00
parent f9682ca563
commit 0ae2ece91e
1 changed files with 11 additions and 6 deletions
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7
clippy_lints/src/loops.rs
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@ -1128,7 +1128,12 @@ fn check_for_loop_arg(cx: &LateContext, pat: &Pat, arg: &Expr, expr: &Expr) {
let fn_arg_tys = method_type.fn_sig(cx.tcx).inputs(); let fn_arg_tys = method_type.fn_sig(cx.tcx).inputs();
assert_eq!(fn_arg_tys.skip_binder().len(), 1); assert_eq!(fn_arg_tys.skip_binder().len(), 1);
if fn_arg_tys.skip_binder()[0].is_region_ptr() { if fn_arg_tys.skip_binder()[0].is_region_ptr() {
lint_iter_method(cx, args, arg, method_name); match cx.tables.expr_ty(&args[0]).sty {
// If the length is greater than 32 no traits are implemented for array and
// therefore we cannot use `&`.
ty::TypeVariants::TyArray(_, size) if const_to_u64(size) > 32 => (),
_ => lint_iter_method(cx, args, arg, method_name)
};
} else { } else {
let object = snippet(cx, args[0].span, "_"); let object = snippet(cx, args[0].span, "_");
span_lint_and_sugg( span_lint_and_sugg(