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diff --git a/tests/ui/unsafe/issue-45087-unreachable-unsafe.mir.stderr b/tests/ui/unsafe/issue-45087-unreachable-unsafe.mir.stderr
new file mode 100644
index 000000000..e79609607
--- /dev/null
+++ b/tests/ui/unsafe/issue-45087-unreachable-unsafe.mir.stderr
@@ -0,0 +1,27 @@
+error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+  --> $DIR/issue-45087-unreachable-unsafe.rs:7:5
+   |
+LL |     *(1 as *mut u32) = 42;
+   |     ^^^^^^^^^^^^^^^^^^^^^ dereference of raw pointer
+   |
+   = note: raw pointers may be null, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
+
+error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+  --> $DIR/issue-45087-unreachable-unsafe.rs:17:5
+   |
+LL |     *a = 1;
+   |     ^^^^^^ dereference of raw pointer
+   |
+   = note: raw pointers may be null, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
+
+error[E0133]: dereference of raw pointer is unsafe and requires unsafe function or block
+  --> $DIR/issue-45087-unreachable-unsafe.rs:29:5
+   |
+LL |     *b = 1;
+   |     ^^^^^^ dereference of raw pointer
+   |
+   = note: raw pointers may be null, dangling or unaligned; they can violate aliasing rules and cause data races: all of these are undefined behavior
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0133`.