From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- .../clippy/tests/ui/indexing_slicing_index.rs | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/tools/clippy/tests/ui/indexing_slicing_index.rs (limited to 'src/tools/clippy/tests/ui/indexing_slicing_index.rs') diff --git a/src/tools/clippy/tests/ui/indexing_slicing_index.rs b/src/tools/clippy/tests/ui/indexing_slicing_index.rs new file mode 100644 index 000000000..45a430edc --- /dev/null +++ b/src/tools/clippy/tests/ui/indexing_slicing_index.rs @@ -0,0 +1,48 @@ +#![feature(inline_const)] +#![warn(clippy::indexing_slicing)] +// We also check the out_of_bounds_indexing lint here, because it lints similar things and +// we want to avoid false positives. +#![warn(clippy::out_of_bounds_indexing)] +#![allow(const_err, clippy::no_effect, clippy::unnecessary_operation)] + +const ARR: [i32; 2] = [1, 2]; +const REF: &i32 = &ARR[idx()]; // Ok, should not produce stderr. +const REF_ERR: &i32 = &ARR[idx4()]; // Ok, let rustc handle const contexts. + +const fn idx() -> usize { + 1 +} +const fn idx4() -> usize { + 4 +} + +fn main() { + let x = [1, 2, 3, 4]; + let index: usize = 1; + x[index]; + x[4]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays. + x[1 << 3]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays. + + x[0]; // Ok, should not produce stderr. + x[3]; // Ok, should not produce stderr. + x[const { idx() }]; // Ok, should not produce stderr. + x[const { idx4() }]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays. + const { &ARR[idx()] }; // Ok, should not produce stderr. + const { &ARR[idx4()] }; // Ok, let rustc handle const contexts. + + let y = &x; + y[0]; // Ok, referencing shouldn't affect this lint. See the issue 6021 + y[4]; // Ok, rustc will handle references too. + + let v = vec![0; 5]; + v[0]; + v[10]; + v[1 << 3]; + + const N: usize = 15; // Out of bounds + const M: usize = 3; // In bounds + x[N]; // Ok, let rustc's `unconditional_panic` lint handle `usize` indexing on arrays. + x[M]; // Ok, should not produce stderr. + v[N]; + v[M]; +} -- cgit v1.2.3