Add more tests

tests/ui/precondition-checks/TODO

@@ -1,10 +1,3 @@
-ptr::swap_nonoverlapping
-ptr::replace
-ptr::read
-ptr::write
-ptr::read_volatile
-ptr::write_volatile
-
 // for range::Range and for ops::Range?
 str::get_unchecked
 str::get_unchecked_mut
@@ -14,19 +7,8 @@ IndexRange::new_unchecked
 char::from_u32_unchecked
 ascii::Char::digit_unchecked
 
-ptr::copy
-ptr::write_bytes
-
-slice::from_raw_parts
-slice::from_raw_parts_mut
-
 unchecked_add
 unchecked_sub
 unchecked_mul
 unchecked_shr
 unchecked_shl
-
-NonZero::from_mut_unchecked
-
-unreachable_unchecked
-assert_unchecked

tests/ui/precondition-checks/alignment.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: Alignment::new_unchecked
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: Alignment::new_unchecked requires
 
 #![feature(ptr_alignment_type)]
 

tests/ui/precondition-checks/assert_unchecked.rs

@@ -0,0 +1,9 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: hint::assert_unchecked must never be called when the condition is false
+
+fn main() {
+    unsafe {
+        std::hint::assert_unchecked(false);
+    }
+}

tests/ui/precondition-checks/copy-nonoverlapping.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: ptr::copy_nonoverlapping
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: ptr::copy_nonoverlapping requires
 //@ revisions: null_src null_dst misaligned_src misaligned_dst overlapping
 
 use std::ptr;

tests/ui/precondition-checks/copy.rs

@@ -0,0 +1,23 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::copy requires
+//@ revisions: null_src null_dst misaligned_src misaligned_dst
+
+use std::ptr;
+
+fn main() {
+    let src = [0u16; 3];
+    let mut dst = [0u16; 3];
+    let src = src.as_ptr();
+    let dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null_src)]
+        ptr::copy(ptr::null(), dst, 1);
+        #[cfg(null_dst)]
+        ptr::copy(src, ptr::null_mut(), 1);
+        #[cfg(misaligned_src)]
+        ptr::copy(src.byte_add(1), dst, 1);
+        #[cfg(misaligned_dst)]
+        ptr::copy(src, dst.byte_add(1), 1);
+    }
+}

tests/ui/precondition-checks/get-unchecked.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: slice::get_unchecked requires
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: slice::get_unchecked requires
 
 fn main() {
     unsafe {

tests/ui/precondition-checks/layout.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: Layout::from_size_align_unchecked
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: Layout::from_size_align_unchecked requires
 //@ revisions: toolarge badalign
 //@[toolarge] compile-flags: --cfg toolarge
 //@[badalign] compile-flags: --cfg badalign

tests/ui/precondition-checks/nonnull.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: NonNull::new_unchecked
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: NonNull::new_unchecked requires
 
 fn main() {
     unsafe {

tests/ui/precondition-checks/nonzero-from_mut_unchecked.rs

@@ -0,0 +1,12 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: NonZero::from_mut_unchecked requires
+
+#![feature(nonzero_from_mut)]
+
+fn main() {
+    unsafe {
+        let mut num = 0u8;
+        std::num::NonZeroU8::from_mut_unchecked(&mut num);
+    }
+}

tests/ui/precondition-checks/nonzero-new_unchecked.rs

@@ -0,0 +1,9 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: NonZero::new_unchecked requires
+
+fn main() {
+    unsafe {
+        std::num::NonZeroU8::new_unchecked(0);
+    }
+}

tests/ui/precondition-checks/read.rs

@@ -0,0 +1,18 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::read requires
+//@ revisions: null misaligned
+//@ ignore-test
+
+use std::ptr;
+
+fn main() {
+    let src = [0u16; 2];
+    let src = src.as_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::read(ptr::null::<u8>());
+        #[cfg(misaligned)]
+        ptr::read(src.byte_add(1));
+    }
+}

tests/ui/precondition-checks/read_volatile.rs

@@ -0,0 +1,17 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::read_volatile requires
+//@ revisions: null misaligned
+
+use std::ptr;
+
+fn main() {
+    let src = [0u16; 2];
+    let src = src.as_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::read_volatile(ptr::null::<u8>());
+        #[cfg(misaligned)]
+        ptr::read_volatile(src.byte_add(1));
+    }
+}

tests/ui/precondition-checks/replace.rs

@@ -0,0 +1,17 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::replace requires
+//@ revisions: null misaligned
+
+use std::ptr;
+
+fn main() {
+    let mut dst = [0u16; 2];
+    let dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::replace(ptr::null_mut::<u8>(), 1);
+        #[cfg(misaligned)]
+        ptr::replace(dst.byte_add(1), 1u16);
+    }
+}

tests/ui/precondition-checks/slice-from-raw-parts-mut.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts_mut
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts_mut requires
 //@ revisions: null misaligned toolarge
 
 fn main() {
@@ -11,6 +10,7 @@ fn main() {
         #[cfg(misaligned)]
         let _s: &mut [u16] = std::slice::from_raw_parts_mut(1usize as *mut u16, 0);
         #[cfg(toolarge)]
-        let _s: &mut [u16] = std::slice::from_raw_parts_mut(2usize as *mut u16, isize::MAX as usize);
+        let _s: &mut [u16] =
+            std::slice::from_raw_parts_mut(2usize as *mut u16, isize::MAX as usize);
     }
 }

tests/ui/precondition-checks/slice-from-raw-parts.rs

@@ -1,7 +1,6 @@
 //@ run-fail
 //@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
-//@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts
-//@ ignore-debug
+//@ error-pattern: unsafe precondition(s) violated: slice::from_raw_parts requires
 //@ revisions: null misaligned toolarge
 
 fn main() {

tests/ui/precondition-checks/swap-nonoverlapping.rs

@@ -0,0 +1,25 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::swap_nonoverlapping requires
+//@ revisions: null_src null_dst misaligned_src misaligned_dst overlapping
+
+use std::ptr;
+
+fn main() {
+    let mut src = [0u16; 3];
+    let mut dst = [0u16; 3];
+    let src = src.as_mut_ptr();
+    let dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null_src)]
+        ptr::swap_nonoverlapping(ptr::null_mut(), dst, 1);
+        #[cfg(null_dst)]
+        ptr::swap_nonoverlapping(src, ptr::null_mut(), 1);
+        #[cfg(misaligned_src)]
+        ptr::swap_nonoverlapping(src.byte_add(1), dst, 1);
+        #[cfg(misaligned_dst)]
+        ptr::swap_nonoverlapping(src, dst.byte_add(1), 1);
+        #[cfg(overlapping)]
+        ptr::swap_nonoverlapping(dst, dst.add(1), 2);
+    }
+}

tests/ui/precondition-checks/unreachable_unchecked.rs

@@ -0,0 +1,9 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: hint::unreachable_unchecked must never be reached
+
+fn main() {
+    unsafe {
+        std::hint::unreachable_unchecked();
+    }
+}

tests/ui/precondition-checks/write.rs

@@ -0,0 +1,18 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::write requires
+//@ revisions: null misaligned
+//@ ignore-test
+
+use std::ptr;
+
+fn main() {
+    let mut dst = [0u16; 2];
+    let mut dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::write(ptr::null_mut::<u8>(), 1u8);
+        #[cfg(misaligned)]
+        ptr::write(dst.byte_add(1), 1u16);
+    }
+}

tests/ui/precondition-checks/write_bytes.rs

@@ -0,0 +1,18 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::write requires
+//@ revisions: null misaligned
+//@ ignore-test
+
+use std::ptr;
+
+fn main() {
+    let mut dst = [0u16; 2];
+    let mut dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::write_bytes(ptr::null_mut::<u8>(), 1u8, 2);
+        #[cfg(misaligned)]
+        ptr::write_bytes(dst.byte_add(1), 1u8, 2);
+    }
+}

tests/ui/precondition-checks/write_volatile.rs

@@ -0,0 +1,17 @@
+//@ run-fail
+//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
+//@ error-pattern: unsafe precondition(s) violated: ptr::write_volatile requires
+//@ revisions: null misaligned
+
+use std::ptr;
+
+fn main() {
+    let mut dst = [0u16; 2];
+    let mut dst = dst.as_mut_ptr();
+    unsafe {
+        #[cfg(null)]
+        ptr::write_volatile(ptr::null_mut::<u8>(), 1u8);
+        #[cfg(misaligned)]
+        ptr::write_volatile(dst.byte_add(1), 1u16);
+    }
+}