diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/codegen/issue-45964-bounds-check-slice-pos.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/codegen/issue-45964-bounds-check-slice-pos.rs')
-rw-r--r-- | tests/codegen/issue-45964-bounds-check-slice-pos.rs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/tests/codegen/issue-45964-bounds-check-slice-pos.rs b/tests/codegen/issue-45964-bounds-check-slice-pos.rs new file mode 100644 index 000000000..1daa213fc --- /dev/null +++ b/tests/codegen/issue-45964-bounds-check-slice-pos.rs @@ -0,0 +1,39 @@ +// This test case checks that slice::{r}position functions do not +// prevent optimizing away bounds checks + +// compile-flags: -O +// ignore-debug: the debug assertions get in the way + +#![crate_type="rlib"] + +// CHECK-LABEL: @test +#[no_mangle] +pub fn test(y: &[u32], x: &u32, z: &u32) -> bool { + let result = match y.iter().position(|a| a == x) { + Some(p) => Ok(p), + None => Err(()), + }; + + if let Ok(p) = result { + // CHECK-NOT: panic + y[p] == *z + } else { + false + } +} + +// CHECK-LABEL: @rtest +#[no_mangle] +pub fn rtest(y: &[u32], x: &u32, z: &u32) -> bool { + let result = match y.iter().rposition(|a| a == x) { + Some(p) => Ok(p), + None => Err(()), + }; + + if let Ok(p) = result { + // CHECK-NOT: panic + y[p] == *z + } else { + false + } +} |