diff options
Diffstat (limited to 'src/test/ui/ptr_ops')
-rw-r--r-- | src/test/ui/ptr_ops/issue-80309-safe.rs | 17 | ||||
-rw-r--r-- | src/test/ui/ptr_ops/issue-80309.rs | 14 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/ptr_ops/issue-80309-safe.rs b/src/test/ui/ptr_ops/issue-80309-safe.rs new file mode 100644 index 000000000..f7513b6b8 --- /dev/null +++ b/src/test/ui/ptr_ops/issue-80309-safe.rs @@ -0,0 +1,17 @@ +// run-pass +// min-llvm-version: 13.0 +// compile-flags: -O + +// Regression test for issue #80309 + +pub fn zero(x: usize) -> usize { + std::ptr::null::<i8>().wrapping_add(x) as usize - x +} +pub fn qux(x: &[i8]) -> i8 { + x[zero(x.as_ptr() as usize)] +} + +fn main() { + let z = vec![42, 43]; + println!("{}", qux(&z)); +} diff --git a/src/test/ui/ptr_ops/issue-80309.rs b/src/test/ui/ptr_ops/issue-80309.rs new file mode 100644 index 000000000..5c0f4b76c --- /dev/null +++ b/src/test/ui/ptr_ops/issue-80309.rs @@ -0,0 +1,14 @@ +// run-pass +// min-llvm-version: 13.0 +// compile-flags: -O + +// Regression test for issue #80309 + +pub unsafe fn foo(x: *const i8) -> i8 { + *x.wrapping_sub(x as _).wrapping_add(x as _) +} + +fn main() { + let x = 42; + println!("{}", unsafe { foo(&x) }); +} |