bjoernager/rust
bjoernager/rust
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Co-authored-by: Nikita Popov <github@npopov.com>
This commit is contained in:
Lzu Tao 2024-06-09 13:25:12 +00:00
parent 95740fbfed
commit f9edd864df
11 changed files with 37 additions and 55 deletions
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16
tests/codegen/slice-pointer-nonnull-unwrap.rs
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@ -5,15 +5,15 @@
use std::ptr::NonNull;
// CHECK-LABEL: @slice_ptr_len_1
// CHECK: {{.*}}:
// CHECK-NEXT: {{.*}}:
// CHECK-NEXT: ret i64 %ptr.1
#[no_mangle]
pub fn slice_ptr_len_1(ptr: *const [u8]) -> usize {
let ptr = ptr.cast_mut();
if let Some(ptr) = NonNull::new(ptr) {
ptr.len()
} else {
// We know ptr is null, so we know ptr.wrapping_byte_add(1) is not null.
NonNull::new(ptr.wrapping_byte_add(1)).unwrap().len()
}
let ptr = ptr.cast_mut();
if let Some(ptr) = NonNull::new(ptr) {
ptr.len()
} else {
// We know ptr is null, so we know ptr.wrapping_byte_add(1) is not null.
NonNull::new(ptr.wrapping_byte_add(1)).unwrap().len()
}
}