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-rw-r--r--src/test/codegen/binary-search-index-no-bound-check.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/codegen/binary-search-index-no-bound-check.rs b/src/test/codegen/binary-search-index-no-bound-check.rs
index 2deabcaa6..c1766a4a4 100644
--- a/src/test/codegen/binary-search-index-no-bound-check.rs
+++ b/src/test/codegen/binary-search-index-no-bound-check.rs
@@ -16,3 +16,23 @@ pub fn binary_search_index_no_bounds_check(s: &[u8]) -> u8 {
42
}
}
+
+// Similarly, check that `partition_point` is known to return a valid fencepost.
+
+// CHECK-LABEL: @unknown_split
+#[no_mangle]
+pub fn unknown_split(x: &[i32], i: usize) -> (&[i32], &[i32]) {
+ // This just makes sure that the subsequent function is looking for the
+ // absence of something that might actually be there.
+
+ // CHECK: call core::panicking::panic
+ x.split_at(i)
+}
+
+// CHECK-LABEL: @partition_point_split_no_bounds_check
+#[no_mangle]
+pub fn partition_point_split_no_bounds_check(x: &[i32], needle: i32) -> (&[i32], &[i32]) {
+ // CHECK-NOT: call core::panicking::panic
+ let i = x.partition_point(|p| p < &needle);
+ x.split_at(i)
+}