Merge from rustc

Author: The Miri Cronjob Bot

tests/fail/intrinsics/ptr_metadata_uninit_slice_data.rs

@@ -7,10 +7,12 @@ use std::intrinsics::mir::*;
 
 #[custom_mir(dialect = "runtime")]
 pub unsafe fn deref_meta(p: *const *const [i32]) -> usize {
-    mir!({
-        RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
-        Return()
-    })
+    mir! {
+        {
+            RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
+            Return()
+        }
+    }
 }
 
 fn main() {

tests/fail/intrinsics/ptr_metadata_uninit_slice_data.stderr

@@ -1,8 +1,8 @@
 error: Undefined Behavior: using uninitialized data, but this operation requires initialized memory
   --> $DIR/ptr_metadata_uninit_slice_data.rs:LL:CC
    |
-LL |         RET = PtrMetadata(*p);
-   |         ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
+LL |             RET = PtrMetadata(*p);
+   |             ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/intrinsics/ptr_metadata_uninit_slice_len.rs

@@ -7,10 +7,12 @@ use std::intrinsics::mir::*;
 
 #[custom_mir(dialect = "runtime")]
 pub unsafe fn deref_meta(p: *const *const [i32]) -> usize {
-    mir!({
-        RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
-        Return()
-    })
+    mir! {
+        {
+            RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
+            Return()
+        }
+    }
 }
 
 fn main() {

tests/fail/intrinsics/ptr_metadata_uninit_slice_len.stderr

@@ -16,8 +16,8 @@ LL |         (*p.as_mut_ptr().cast::<[*const i32; 2]>())[0] = 4 as *const i32;
 error: Undefined Behavior: using uninitialized data, but this operation requires initialized memory
   --> $DIR/ptr_metadata_uninit_slice_len.rs:LL:CC
    |
-LL |         RET = PtrMetadata(*p);
-   |         ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
+LL |             RET = PtrMetadata(*p);
+   |             ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/intrinsics/ptr_metadata_uninit_thin.rs

@@ -7,10 +7,12 @@ use std::intrinsics::mir::*;
 
 #[custom_mir(dialect = "runtime")]
 pub unsafe fn deref_meta(p: *const *const i32) -> () {
-    mir!({
-        RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
-        Return()
-    })
+    mir! {
+        {
+            RET = PtrMetadata(*p); //~ ERROR: Undefined Behavior: using uninitialized data
+            Return()
+        }
+    }
 }
 
 fn main() {

tests/fail/intrinsics/ptr_metadata_uninit_thin.stderr

@@ -1,8 +1,8 @@
 error: Undefined Behavior: using uninitialized data, but this operation requires initialized memory
   --> $DIR/ptr_metadata_uninit_thin.rs:LL:CC
    |
-LL |         RET = PtrMetadata(*p);
-   |         ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
+LL |             RET = PtrMetadata(*p);
+   |             ^^^^^^^^^^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

tests/fail/issue-miri-2432.rs

@@ -1,6 +1,11 @@
 //@revisions: stack tree
 //@compile-flags: -Zmiri-strict-provenance
 //@[tree]compile-flags: -Zmiri-tree-borrows
+
+// WARNING: If you would ever want to modify this test,
+// please consider modifying rustc's async drop test at
+// `tests/ui/async-await/async-drop.rs`.
+
 #![feature(async_drop, impl_trait_in_assoc_type, noop_waker, async_closure)]
 #![allow(incomplete_features, dead_code)]
 

tests/fail/issue-miri-2432.stderr

@@ -0,0 +1,12 @@
+// Miri currently doesn't require types without drop glue to be
+// valid when dropped. This test confirms that behavior.
+// This is not a stable guarantee!
+
+use std::ptr;
+
+fn main() {
+    let mut not_a_bool = 13u8;
+    unsafe {
+        ptr::drop_in_place(&mut not_a_bool as *mut u8 as *mut bool)
+    };
+}