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Handle signed types in node_as_const_fullint

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Enrico Schmitz 2017-03-01 15:06:53 +01:00 committed by Enrico Schmitz
parent 7e24e1db09
commit 63296f0393
1 changed files with 5 additions and 1 deletions
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6
clippy_lints/src/types.rs
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@ -5,6 +5,7 @@ use rustc::lint::*;
use rustc::ty;
use std::cmp::Ordering;
use syntax::ast::{IntTy, UintTy, FloatTy};
use syntax::attr::IntType;
use syntax::codemap::Span;
use utils::{comparisons, higher, in_external_macro, in_macro, match_def_path, snippet, span_help_and_lint, span_lint,
opt_def_id, last_path_segment};
@ -1111,7 +1112,10 @@ fn node_as_const_fullint(cx: &LateContext, expr: &Expr) -> Option<FullInt> {
match ConstContext::with_tables(cx.tcx, cx.tables).eval(expr) {
Ok(val) => {
if let Integral(const_int) = val {
Some(FullInt::U(const_int.to_u128_unchecked()))
match const_int.int_type() {
IntType::SignedInt(_) => Some(FullInt::S(const_int.to_u128_unchecked() as i128)),
IntType::UnsignedInt(_) => Some(FullInt::U(const_int.to_u128_unchecked())),
}
} else {
None
}