3 files changed, 42 insertions, 0 deletions
diff --git a/tests/mir-opt/dont_yeet_assert.generic.InstCombine.diff b/tests/mir-opt/dont_yeet_assert.generic.InstCombine.diff
new file mode 100644
index 00000000000..c1a42a47ed2
--- /dev/null
+++ b/tests/mir-opt/dont_yeet_assert.generic.InstCombine.diff
@@ -0,0 +1,23 @@
+- // MIR for `generic` before InstCombine
++ // MIR for `generic` after InstCombine
+  
+  fn generic() -> () {
+      let mut _0: ();                      // return place in scope 0 at $DIR/dont_yeet_assert.rs:+0:21: +0:21
+      let _1: ();                          // in scope 0 at $DIR/dont_yeet_assert.rs:+1:5: +1:61
+  
+      bb0: {
+          StorageLive(_1);                 // scope 0 at $DIR/dont_yeet_assert.rs:+1:5: +1:61
+          _1 = assert_mem_uninitialized_valid::<&T>() -> bb1; // scope 0 at $DIR/dont_yeet_assert.rs:+1:5: +1:61
+                                           // mir::Constant
+                                           // + span: $DIR/dont_yeet_assert.rs:10:5: 10:59
+                                           // + user_ty: UserType(0)
+                                           // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_mem_uninitialized_valid::<&T>}, val: Value(<ZST>) }
+      }
+  
+      bb1: {
+          StorageDead(_1);                 // scope 0 at $DIR/dont_yeet_assert.rs:+1:61: +1:62
+          _0 = const ();                   // scope 0 at $DIR/dont_yeet_assert.rs:+0:21: +2:2
+          return;                          // scope 0 at $DIR/dont_yeet_assert.rs:+2:2: +2:2
+      }
+  }
+  
diff --git a/tests/mir-opt/dont_yeet_assert.rs b/tests/mir-opt/dont_yeet_assert.rs
new file mode 100644
index 00000000000..7cec761eaba
--- /dev/null
+++ b/tests/mir-opt/dont_yeet_assert.rs
@@ -0,0 +1,11 @@
+// compile-flags: --crate-type=lib
+// unit-test: InstCombine
+
+#![feature(core_intrinsics)]
+
+// Want to make sure this assertion isn't compiled away in generic code.
+
+// EMIT_MIR dont_yeet_assert.generic.InstCombine.diff
+pub fn generic<T>() {
+    core::intrinsics::assert_mem_uninitialized_valid::<&T>();
+}
diff --git a/tests/ui/lint/invalid_value-polymorphic.rs b/tests/ui/lint/invalid_value-polymorphic.rs
new file mode 100644
index 00000000000..055173e9842
--- /dev/null
+++ b/tests/ui/lint/invalid_value-polymorphic.rs
@@ -0,0 +1,8 @@
+// compile-flags: --crate-type=lib -Zmir-enable-passes=+InstCombine
+// build-pass
+
+#![feature(core_intrinsics)]
+
+pub fn generic<T>() {
+    core::intrinsics::assert_mem_uninitialized_valid::<&T>();
+}