Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/hir-ty/src/consteval/tests/intrinsics.rs')
-rw-r--r--crates/hir-ty/src/consteval/tests/intrinsics.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/crates/hir-ty/src/consteval/tests/intrinsics.rs b/crates/hir-ty/src/consteval/tests/intrinsics.rs
index b068286600..2855f78900 100644
--- a/crates/hir-ty/src/consteval/tests/intrinsics.rs
+++ b/crates/hir-ty/src/consteval/tests/intrinsics.rs
@@ -252,6 +252,28 @@ fn wrapping_add() {
}
#[test]
+fn ptr_offset_from() {
+ check_number(
+ r#"
+ //- minicore: index, slice, coerce_unsized
+ extern "rust-intrinsic" {
+ pub fn ptr_offset_from<T>(ptr: *const T, base: *const T) -> isize;
+ pub fn ptr_offset_from_unsigned<T>(ptr: *const T, base: *const T) -> usize;
+ }
+
+ const GOAL: isize = {
+ let x = [1, 2, 3, 4, 5i32];
+ let r1 = -ptr_offset_from(&x[0], &x[4]);
+ let r2 = ptr_offset_from(&x[3], &x[1]);
+ let r3 = ptr_offset_from_unsigned(&x[3], &x[0]) as isize;
+ r3 * 100 + r2 * 10 + r1
+ };
+ "#,
+ 324,
+ );
+}
+
+#[test]
fn saturating() {
check_number(
r#"