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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/codegen/slice-position-bounds-check.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/slice-position-bounds-check.rs')
-rw-r--r-- | tests/codegen/slice-position-bounds-check.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/codegen/slice-position-bounds-check.rs b/tests/codegen/slice-position-bounds-check.rs new file mode 100644 index 000000000..b494f42b2 --- /dev/null +++ b/tests/codegen/slice-position-bounds-check.rs @@ -0,0 +1,32 @@ +// no-system-llvm +// compile-flags: -O -C panic=abort +#![crate_type = "lib"] + +fn search<T: Ord + Eq>(arr: &mut [T], a: &T) -> Result<usize, ()> { + match arr.iter().position(|x| x == a) { + Some(p) => { + Ok(p) + }, + None => Err(()), + } +} + +// CHECK-LABEL: @position_no_bounds_check +#[no_mangle] +pub fn position_no_bounds_check(y: &mut [u32], x: &u32, z: &u32) -> bool { + // This contains "call assume" so we cannot just rule out all calls + // CHECK-NOT: panic_bounds_check + if let Ok(p) = search(y, x) { + y[p] == *z + } else { + false + } +} + +// just to make sure that panicking really emits "panic_bounds_check" somewhere in the IR +// CHECK-LABEL: @test_check +#[no_mangle] +pub fn test_check(y: &[i32]) -> i32 { + // CHECK: panic_bounds_check + y[12] +} |